CN213815613U

CN213815613U - Novel fireproof cable with multiple flame-retardant layers

Info

Publication number: CN213815613U
Application number: CN202023236559.4U
Authority: CN
Inventors: 方涌东
Original assignee: Guangdong Shengyu Cable Industrial Co ltd
Current assignee: Guangdong Shengyu Cable Industrial Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-07-27
Anticipated expiration: 2030-12-29

Abstract

The utility model provides a novel fireproof cable with many fire-retardant layers, including a plurality of subconductors and even cladding the filling layer of subconductor, the cladding has first fire-retardant layer, flame retardant coating, second fire-retardant layer, metal sheath layer, oversheath layer outside the filling layer in proper order, and insulating layer and metal overcoat layer have the flexible characteristic to many fire-retardant layers and the flame retardant coating that set up all have very excellent fire prevention fire behavior, make fireproof cable's fire rating show through the design of this invention and improve, possess better fire prevention effect, the structure is more optimized, and the design is more reasonable, has promoted the universality, can use in important electric circuit and various complicated places.

Description

Novel fireproof cable with multiple flame-retardant layers

Technical Field

The utility model relates to the technical field of cables, more specifically relates to a novel fireproof cable with fire-retardant layer more.

Background

Modern society makes rapid progress, and in order to satisfy the growing electric power demand, power transmission has met more severe examination, and the cable that possesses fire behavior also arises as a result of the need to deal with various complicated use scenarios. Particularly, when a fire happens, the technical problems that the fire is prevented from spreading and the normal and safe operation of the cable is guaranteed become an urgent need to be solved.

The cable generally comprises three main parts of a conductive wire core, an insulating layer and a protective layer, wherein the conductive wire core is formed by twisting a plurality of or a plurality of groups of conducting wires, each group of conducting wires are mutually insulated, the protective layer is coated outside the conducting wires, but the fireproof performance of the existing cable is not high, and the design is still to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel fireproof cable with many fire-retardant layers possesses better fire prevention effect, has improved current fireproof cable's universality.

The purpose of the utility model is realized by adopting the following technical scheme:

the utility model provides a novel fireproof cable with many fire-retardant layers, includes a plurality of subconductors and even cladding the filling layer of subconductor, the subconductor includes metallic conductor and insulating layer, the insulating layer parcel metallic conductor, the filling layer outward in proper order the cladding have fire-retardant layer, metal sheath layer, oversheath layer of preventing fires, fire-retardant layer of preventing fires is equipped with first fire-retardant layer, flame retardant coating, the fire-retardant layer of second in proper order, first fire-retardant layer is expandable graphite and compound polystyrene foam mixing layer, expandable graphite is network structure with compound polystyrene foam mixing layer, set up in the filling layer with layer intracavity between the flame retardant coating, still wrapped up the fire-retardant area of glass silk cloth on the flame retardant layer, the parcel has organosilicon modified acrylic resin layer on the fire-retardant area of glass silk cloth.

The utility model discloses further scheme sets up to: the insulating layer is a high-temperature-resistant inorganic insulating layer.

The utility model discloses further scheme sets up to: the fire-resistant layer is a mica tape layer.

The utility model discloses further scheme sets up to: the metal sheath layer is a non-magnetic copper sheath layer and is corrugated.

The utility model discloses further scheme sets up to: and inorganic mineral particles are filled in a gap cavity of the expanded graphite and composite polystyrene foam plastic mixed layer.

The utility model discloses further scheme sets up to: the metal sheath layer is formed by longitudinally wrapping a copper strip with argon arc welding embossing.

The utility model discloses the beneficial effect who has as follows:

the utility model provides a novel fireproof cable with many fire-retardant layers, this cable insulation layer adopts high temperature resistant inorganic insulating material, the flexible characteristic has, include first fire-retardant layer outside the filling layer in proper order, the flame retardant coating of flame retardant coating, the fire-retardant layer of second, the metal sheath layer, the oversheath layer, these layers all have the fire-retardant protective properties of very excellent fire prevention, combined design makes fireproof cable's fire rating show the improvement like this, possess better fire prevention effect, the structure is more optimized, the design is more reasonable, the universality is promoted, can use in important electric circuit and various complicated places.

The first flame-retardant layer is a mixed layer of expandable graphite and composite polystyrene foam plastic, and the expandable graphite has expansibility, damage resistance, acid-base corrosion resistance and high temperature resistance, so that when a fire happens, the expandable graphite expands rapidly, inorganic mineral particles filled in a gap cavity wrapped by a generated expanded graphite material are hermetically covered on the surface of a filling layer, the contact between an internal lead and heat radiation and oxygen is isolated, and the mixed layer of the expandable graphite and the composite polystyrene foam plastic has the functions of water resistance and impact resistance and improves the overall flame retardance and heat insulation effect of the first flame-retardant layer; the mica tape material adopted by the fire-resistant layer has excellent high-temperature resistance and combustion resistance, when the fire-resistant layer is burnt by open fire, harmful smoke is not easy to volatilize, an effective fire-resistant effect is achieved, and potential safety hazards are avoided; the glass fiber cloth flame-retardant belt on the second flame-retardant layer belongs to an inorganic non-metallic material with excellent performance, has good insulativity, stronger heat resistance, good corrosion resistance and high mechanical strength, and has excellent weather resistance, solvent resistance and impact resistance by matching with the organic silicon modified acrylic resin layer coated on the glass fiber flame-retardant belt, thereby further improving the fireproof flame-retardant effect; the metal sheath layer is corrugated by adopting non-magnetic copper materials, has flexibility, is convenient to bend, can perfectly adapt to various occasions needing bending arrangement, and solves the technical problems of low fireproof performance and poor flame retardant effect of the existing cable.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

Reference numerals:

1. a sub-wire; 2. an insulating layer; 3. a filling layer; 4. a first flame retardant layer; 5. a refractory layer; 6. a second flame retardant layer; 7. a metal sheath layer; 8. an outer jacket layer.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Examples

Referring to fig. 1, the novel fireproof cable with multiple flame retardant layers of the present invention comprises a plurality of sub-wires 1 and a filling layer 3 uniformly covering the sub-wires 1, the sub-wire 1 comprises a metal conductor and an insulating layer 2, the insulating layer 2 wraps the metal conductor, the filling layer 3 is coated with a fireproof flame-retardant layer, a metal sheath layer 7 and an outer sheath layer 8 in sequence, the fireproof flame-retardant layer is sequentially provided with a first flame-retardant layer 4, a flame-retardant layer 5 and a second flame-retardant layer 6, the first flame-retardant layer 4 is a mixed layer of expandable graphite and composite polystyrene foam plastic, the expandable graphite and composite polystyrene foam plastic mixed layer is of a net structure and is arranged in a layer cavity between the filling layer 3 and the fire-resistant layer 5, the flame-retardant layer 5 is also wrapped with a glass fiber cloth flame-retardant belt, and the glass fiber cloth flame-retardant belt is wrapped with an organic silicon modified acrylic resin layer.

Further provided are: the insulating layer 2 is a high-temperature-resistant inorganic insulating layer 2.

The high-temperature-resistant inorganic insulating material has higher insulation resistance and compressive strength, can avoid accidents such as electric leakage and cable breakdown, has good heat resistance, can avoid aging and deterioration caused by long-term overheating, and also has good heat conductivity, moisture resistance, lightning protection and higher mechanical strength, and the material has the characteristic of flexibility, is suitable for more laying scenes, and has a simple processing process.

Further provided are: the fire-resistant layer 5 is a mica tape layer.

The mica tape material adopted by the fire-resistant layer 5 has excellent high-temperature resistance and combustion resistance, and when the mica tape material is burnt by open fire, harmful smoke is not easy to volatilize, thereby playing an effective fireproof role and avoiding potential safety hazards.

Further provided are: the metal sheath layer 7 is a non-magnetic copper sheath layer and is corrugated.

The outer sheath layer 8 can protect the metal sheath layer 7 from being corroded by surrounding substances, the metal sheath layer 7 is made of non-magnetic copper materials and formed by longitudinally wrapping argon arc welding embossing through a copper strip, the copper strip has high corrosion resistance, the corrosion resistance effect of the cable is enhanced, the embossing is flexible after being corrugated, the cable is convenient to bend, and the cable can perfectly adapt to occasions with more arrangement requirements,

further provided are: and inorganic mineral particles are filled in a gap cavity of the expandable graphite and composite polystyrene foam plastic mixed layer.

When the temperature is overheated to cause the expandable graphite and the polystyrene foam composite layer to expand rapidly, the inorganic mineral particles are quickly wrapped in the net structure of the first flame-retardant layer 4 to block fire.

Further provided are: the metal sheath layer 7 is formed by longitudinally wrapping a copper strip with argon arc welding embossing.

The utility model discloses a theory of operation does:

when the cable is used, the fireproof and flame-retardant performances are comprehensively improved by arranging the first flame-retardant layer 4, the flame-retardant layer 5 and the second flame-retardant layer 6. The first flame-retardant layer 4 adopts a mixed layer of expandable graphite and composite polystyrene foam plastic, because the expandable graphite has expansibility, damage resistance, acid-base corrosion resistance and high temperature resistance, when a fire breaks out, the expandable graphite expands rapidly, and simultaneously, the generated graphite expanded material wraps inorganic mineral particles filled in a gap cavity and covers the surface of the filling layer 3 in a sealing manner, so that the contact between an internal lead and heat radiation and oxygen is isolated, and because the expandable graphite is mixed with the composite polystyrene foam plastic, the mixed layer of the expandable graphite and the composite polystyrene foam plastic has the functions of water resistance and impact resistance, and the overall flame retardance and heat insulation effect of the first flame-retardant layer 4 are improved; the glass fiber cloth flame-retardant belt on the second flame-retardant layer 6 belongs to an inorganic non-metallic material with excellent performance, the insulation property is good, the heat resistance is strong, the corrosion resistance is good, the mechanical strength is high, the effects of protecting the flame-retardant layer 5 and the first flame-retardant layer 4 and isolating and shielding the current of an internal wire can be achieved, the organosilicon modified acrylic resin layer coated on the glass fiber flame-retardant belt is matched to achieve the effects of excellent weather resistance, solvent resistance and impact resistance, the second flame-retardant layer 6 can buffer the impact force of the cable in various environments and has the corrosion resistance effect, the normal working and operation of the cable are ensured, the overall fire resistance and the firmness of the cable are further improved, the combined design enables the fireproof grade of the fireproof cable to be improved remarkably, the fireproof cable has a better fireproof effect, is more reasonable in design, improves universality, and can be applied to important electric circuits and various complex places.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention should not be limited thereby, and modifications and equivalent variations made by those skilled in the art can still be made within the scope of the present invention.

Claims

1. The utility model provides a novel fireproof cable with many fire-retardant layers, includes a plurality of subconductors and even cladding the filling layer of subconductor, a serial communication port, the subconductor includes metallic conductor and insulating layer, the insulating layer parcel metallic conductor, the filling layer outward in proper order the cladding have fire-retardant layer, metal sheath layer, oversheath layer, fire-retardant layer of fire prevention is equipped with first fire-retardant layer, flame retardant coating, second in proper order, first fire-retardant layer is expandable graphite and compound polystyrene foam mixing layer, expandable graphite is network structure with compound polystyrene foam mixing layer, set up in the filling layer with layer intracavity between the flame retardant coating, still wrapped up the fire-retardant area of glass silk cloth on the flame retardant area of glass silk cloth, it has organic silicon modified acrylic resin layer to wrap up on the fire-retardant area of glass silk cloth.

2. The novel fireproof cable with multiple flame retardant layers according to claim 1, wherein the insulating layer is a high temperature resistant inorganic insulating layer.

3. The novel fireproof cable with multiple flame retardant layers according to claim 1, wherein the flame retardant layer is a mica tape layer.

4. The novel flameproof cable of claim 1, wherein the metal jacket layer is a non-magnetic copper jacket layer and is corrugated.

5. The novel fireproof cable with multiple flame retardant layers as claimed in claim 1, wherein the gap cavity of the mixed layer of expanded graphite and syntactic polystyrene foam is filled with inorganic mineral particles.

6. The novel fireproof cable with multiple flame retardant layers as claimed in claim 1, wherein the metal sheath layer is made of copper strip longitudinally wrapped argon arc welding embossing.