CN215118415U

CN215118415U - Environment-friendly moisture-proof flame-retardant cable

Info

Publication number: CN215118415U
Application number: CN202121374385.XU
Authority: CN
Inventors: 陈奎
Original assignee: Guangzhou Aotong Wire And Cable Co ltd
Current assignee: Guangzhou Aotong Wire And Cable Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-10
Anticipated expiration: 2031-06-21

Abstract

The utility model provides an environment-friendly moisture-proof flame-retardant cable, which comprises a conductive unit, wherein the conductive unit comprises inner cores with a preset number, the inner cores are formed by twisting multi-core cable cores, and a filling layer is arranged between the inner cores with the preset number; the inner liner, the armor layer and the outer sheath layer are sequentially wrapped outside the filling layer; the filling layer comprises a ceramic filling layer, and a magnesium hydroxide flame-retardant layer is embedded in the filling layer; armor includes aluminium sheath and parcel the steel wire layer of aluminium sheath, spiral helicine sunken and protruding has been set up on the aluminium sheath layer, the steel wire on steel wire layer along sunken twist with the fingers on the aluminium sheath layer, solved among the current cable fire-retardant not good technical problem of fireproof effect.

Description

Environment-friendly moisture-proof flame-retardant cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a dampproofing flame retarded cable of environment-friendly.

Background

With the increasing speed of economic construction, the number of various large industrial facilities, high-rise buildings, commercial buildings and residential houses is gradually increased, and the total amount of cables used is increased. In the using process of the cable commonly used at present, when the internal current-carrying capacity of the cable is too large, the cable can generate heat, the insulating layer in contact with the cable can transfer the heat, spontaneous combustion can occur when the heat of the insulating layer is accumulated to the melting point of the insulating layer, an adjacent cable is further ignited, a fire disaster is easily caused, or electrical fire accidents caused by short circuit, spontaneous combustion and the like due to aging of the cable are frequent day by day, the caused loss is serious day by day, and the flame-retardant and fireproof effects are poor, so that the design of the high-performance cable with the flame-retardant and fireproof effects is particularly important.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dampproofing flame retarded cable of environment-friendly that can play fire-retardant fire prevention effect.

An environment-friendly moisture-proof flame-retardant cable comprises a conductive unit, wherein the conductive unit comprises a predetermined number of inner cores, the inner cores are formed by stranding multi-core cable cores, and filling layers are arranged among the predetermined number of inner cores; the inner liner, the armor layer and the outer sheath layer are sequentially wrapped outside the filling layer; the filling layer comprises a ceramic filling layer; a magnesium hydroxide flame-retardant layer is also embedded in the filling layer; the armor layer comprises an aluminum sheath and a steel wire layer wrapping the aluminum sheath, spiral depressions and protrusions are arranged on the aluminum sheath, and steel wires of the steel wire layer are twisted on the aluminum sheath along the depressions.

Preferably, the steel wire layer comprises a plurality of galvanized steel wires.

Preferably, the depth of the recess and the height of the protrusion are the same.

Preferably, the inner liner is a fiberglass layer.

Preferably, the outer sheath layer is a mixed layer of PVC and PP.

Preferably, the insulating layer of the inner core is wrapped with a shielding layer.

Preferably, the shielding layer is a metal shielding layer.

Compared with the prior art, the utility model discloses following beneficial effect has: the inner liner, the armor layer and the outer sheath layer are sequentially wrapped outside the filling layer, so that an external fire source is blocked by three layers, the ceramic filling layer is not easy to be ignited by the external fire source, a primary fireproof effect is achieved, the ceramic filling layer has a flame-retardant effect, the conductive transmission effect of the conductive unit is prevented from being influenced, and the magnesium hydroxide flame-retardant layer is further embedded in the filling layer; the armor layer comprises an aluminum sheath and a steel wire layer wrapping the aluminum sheath, spiral depressions and protrusions are arranged on the aluminum sheath, steel wires of the steel wire layer are twisted on the aluminum sheath along the depressions, tensile resistance of the cable is enhanced, and the structure of the flame retardant layer is further increased; the multiple layer structure realizes the flame-retardant, fireproof and moistureproof effects of the cable, and solves the technical problem of poor flame-retardant and fireproof effects in the existing cable.

Drawings

FIG. 1 is a schematic view of the overall structure of the environment-friendly moisture-proof flame-retardant cable of the present invention;

fig. 2 is the environment-friendly moisture-proof flame-retardant cable of the present invention is used for indicating the protruding and sunken structure.

Wherein the reference numerals are:

1. a conductive unit; 11. an inner core; 111. a shielding layer; 112. an insulating layer; 2. a filling layer; 3. an inner liner layer; 4. an armor layer; 41. an aluminum sheath; 411. a protrusion; 412. recessing; 42. a steel wire layer; 5. an outer jacket layer.

Detailed Description

The embodiments described below are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Reference is now made in detail to fig. 1 and 2 for an embodiment of the present invention.

Referring to fig. 1 and 2, an environment-friendly moisture-proof flame-retardant cable includes a conductive unit 1, the conductive unit 1 includes a predetermined number of cores 11, the cores 11 are formed by twisting multi-core cable cores, and filling layers 2 are disposed between the predetermined number of cores 11; the inside liner 3, the armor layer 4 and the outer sheath layer 5 are sequentially wrapped outside the filling layer 2; the filling layer 2 comprises a ceramic filling layer, and a magnesium hydroxide flame-retardant layer is embedded in the filling layer 2; the armor layer 4 comprises an aluminum sheath 41 and a steel wire layer 42 wrapping the aluminum sheath 41, wherein a spiral recess 412 and a spiral protrusion 411 are arranged on the aluminum sheath 41, and steel wires of the steel wire layer 42 are twisted on the aluminum sheath 41 along the recess 412.

In this embodiment, the magnesium hydroxide flame-retardant layer is formed by combining magnesium hydroxide and an adhesive, it should be noted that a plurality of magnesium hydroxide and adhesive structures with different shapes and structures can be formed between the magnesium hydroxide and the adhesive, and the magnesium hydroxide and the adhesive structure are embedded in the filling layer 2 at intervals.

Magnesium hydrate can release crystal water when the cable burning, reduces cable flame temperature to prevent the heat that flame sustained combustion brought, can not only ensure the height that flame stretchs, speed when can also reducing the volume of producing cigarette and burning also can not produce black cigarette and poison gas during the burning, reduce fire hazard, accord with green's requirement, also can not bring the trouble for the person of escaping.

Referring to fig. 1 and 2, it should be noted that the armor layer 4 includes an aluminum sheath 41 and a steel wire layer 42 wrapping the aluminum sheath 41, a spiral recess 412 and a spiral protrusion 411 are disposed on the aluminum sheath 41, the recess 412 and the protrusion 411 are spirally disposed along a direction surrounding the cable, and the protrusion 411 and the recess 412 are integrally connected to each other, steel wires of the steel wire layer 42 are twisted on the aluminum sheath 41 along the recess 412, that is, the steel wires of the steel wire layer are located in the recess 412, the steel wire layer 42 and the aluminum sheath 41 have double flame retardant and shielding effects, so as to further improve the shielding and flame retardant capabilities of the cable, the steel wires are disposed in the recess 412, so that the steel wires do not occupy additional space, the volume of the cable is reduced, the cable is convenient to use and transport, the mechanical strength of the cable is enhanced, the anti-corrosion capability is improved, and the aluminum sheath 41 has a heat conducting effect, when the conductive unit 1 generates heat due to internal overload, the aluminum sheath 41 can conduct heat quickly, so that the risk of spontaneous combustion inside the cable is reduced; the recess 412 and the protrusion 411 are of a unitary structure and have a certain deformation capability, and the recess 412 and the protrusion 411 have a buffering function when the cable is stretched and bent.

Specifically, the steel wire layer 42 includes a plurality of galvanized steel wires, the galvanized steel wires are carbon steel wires whose surfaces are galvanized by hot dipping or electroplating, the surfaces of the galvanized steel wires are smooth and clean without cracks, the galvanized layer is uniform, the adhesive force is strong, the corrosion resistance is durable, and the toughness and the elasticity are good.

Specifically, the depth of the recess 412 is consistent with the height of the protrusion 411, so that the recess 412 and the protrusion 411 can be uniformly stressed, and thus, a part of the recess is not seriously deformed or broken due to overlarge stress, and the service life is prolonged. It should be noted that, the specific depth and height of the concave 412 and the convex 411 can be set by those skilled in the art according to the actual requirement.

Specifically, the inner liner 3 is a glass fiber layer, and the glass fiber and the adhesive form a glass fiber layer; the glass fiber is an inorganic non-metallic material with excellent performance, and can enable the cable to have the advantages of good insulation, strong heat resistance, good corrosion resistance and high mechanical strength.

Specifically, the outer sheath layer 5 is a mixed layer of PVC and PP, which can ensure that transmitted current, electromagnetic waves or light waves only travel along the wire and do not flow to the outside, and the potential on the conductor can be isolated, thus maintaining the normal transmission function of the wire.

Specifically, the insulating layer 112 of the inner core 11 is wrapped by the shielding layer 111, the shielding layer 111 is a metal shielding layer 111, when a current passes through the cable, a magnetic field is generated around the current, in order to avoid affecting other elements, the shielding layer 111 can shield the electromagnetic field in the cable, and can also play a certain role in grounding protection, and if a cable core is damaged, the leaked current can flow into a grounding grid along with the shielding layer 111 to play a role in safety protection.

The inner liner layer 3, the armor layer 4 and the outer sheath layer 5 are sequentially wrapped outside the filling layer 2, so that an external fire source is blocked in a multi-layer mode, the fire source is not easy to be ignited by an external fire source, a primary fireproof effect is achieved, the filling layer 2 comprises a filling rope and a ceramic filling layer 2, the filling rope and the ceramic filling layer 2 are filled in a mixed mode, the ceramic filling layer 2 has a flame-retardant effect, and a magnesium hydroxide flame-retardant layer is further inlaid in the filling layer 2; the armor layer 4 comprises an aluminum sheath 41 and a steel wire layer 42 wrapping the aluminum sheath 41, a spiral recess 412 and a spiral protrusion 411 are arranged on the aluminum sheath 41, steel wires of the steel wire layer 42 are twisted on the aluminum sheath 41 along the recess 412, the tensile resistance of the cable is enhanced, and the structure of a flame retardant layer is further increased; the multiple layer structure has realized the fire-retardant, fire prevention and dampproofing effect of cable, and the multilayer cooperation improves the fire prevention fire resistance of cable greatly, and fire-retardant level reaches B1 level, has solved the not good technical problem of fire-retardant fireproof effect in the current cable, has prolonged the life of cable, has reduced the probability of taking place the conflagration, and is energy-concerving and environment-protective.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims.

Claims

1. The environment-friendly moisture-proof flame-retardant cable is characterized by comprising conductive units, wherein each conductive unit comprises a predetermined number of inner cores, each inner core is formed by stranding multi-core cable cores, and filling layers are arranged among the inner cores in the predetermined number;

the inner liner, the armor layer and the outer sheath layer are sequentially wrapped outside the filling layer;

the filling layer comprises a ceramic filling layer, and a magnesium hydroxide flame-retardant layer is embedded in the filling layer;

the armor layer comprises an aluminum sheath and a steel wire layer wrapping the aluminum sheath, spiral depressions and protrusions are arranged on the aluminum sheath, and steel wires of the steel wire layer are twisted on the aluminum sheath along the depressions.

2. The environment-friendly moisture-proof flame-retardant cable according to claim 1, wherein the steel wire layer comprises a plurality of galvanized steel wires.

3. The environmentally friendly moisture resistant and flame retardant cable of claim 1, wherein the depth of the recess is the same as the height of the protrusion.

4. The environment-friendly moisture-proof flame-retardant cable according to claim 1, wherein the inner liner is a glass fiber layer.

5. The environment-friendly moisture-proof flame-retardant cable according to claim 1, wherein the outer sheath layer is a mixed layer of PVC and PP.

6. The environment-friendly moisture-proof flame-retardant cable according to claim 1, wherein the insulating layer of the inner core is wrapped with a shielding layer.

7. The environment-friendly moisture-proof flame-retardant cable according to claim 6, wherein the shielding layer is a metal shielding layer.