CN216528166U

CN216528166U - Low-smoke halogen-free flame-retardant B1-grade low-voltage special cable

Info

Publication number: CN216528166U
Application number: CN202122553270.3U
Authority: CN
Inventors: 周海燕; 章泽培; 黎伟泽; 姚德时; 陈尚凤
Original assignee: Guangdong Cable Works Co ltd
Current assignee: Guangdong Cable Works Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-05-13
Anticipated expiration: 2031-10-22

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a low-smoke halogen-free flame-retardant B1-grade low-voltage special cable which comprises a copper conductor, a crosslinked polyethylene insulating layer, a halogen-free low-smoke high-flame-retardant glass fiber rope, a halogen-free low-smoke high-flame-retardant glass fiber wrapping tape, a halogen-free low-smoke high-flame-retardant oxygen-isolating layer, a steel strip armor layer and a halogen-free low-smoke flame-retardant non-dripping outer sheath, wherein the crosslinked polyethylene insulating layer is hollow, the copper conductor is positioned in the crosslinked polyethylene insulating layer, the outer side of the crosslinked polyethylene insulating layer is contacted with the halogen-free low-smoke high-flame-retardant glass fiber wrapping tape, the flame-retardant performance of the cable is improved through the combined action of the low-smoke halogen-free high-flame-retardant glass fiber rope, the halogen-free low-smoke high-flame-retardant glass fiber wrapping tape, the halogen-free low-smoke high-flame-retardant oxygen-isolating layer, the steel strip armor layer and the halogen-free low-smoke flame-retardant low-flame-retardant non-dripping outer sheath, the safety of the cable is further improved.

Description

Low-smoke halogen-free flame-retardant B1-grade low-voltage special cable

Technical Field

The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free flame-retardant B1-grade low-voltage special cable.

Background

A cable is a power or signal transmission device, and is generally composed of several wires or groups of wires.

The cable is applied to public places with dense population, such as rail transit, schools, supermarkets, subway stations, hospitals, power stations, computing centers, airports, exhibition halls and the like, and common cables in power lines in high-temperature environments, power supply lines in potential dangerous explosion areas and complex fixed power supply lines are high in danger, can generate a large amount of toxic gas after combustion, and has high potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low-smoke halogen-free flame-retardant B1-grade low-voltage special cable, which is used for solving the problems that the common cable applied to dense public places such as rail transit, schools, supermarkets, subway stations, hospitals, power stations, computing centers, airports, exhibition halls and the like, power lines in high-temperature environments, power supply lines in potential dangerous explosion areas and complex fixed power supply lines are high in danger, a large amount of toxic gas is generated after combustion, and the cable has high potential safety hazards.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a fire-retardant B1 level low pressure special type cable of low smoke and zero halogen, includes copper conductor, crosslinked polyethylene insulating layer, the fire-retardant glass fine band of low smoke and zero halogen, and there is not fire-retardant oversheath that drips of low smoke and zero halogen, crosslinked polyethylene insulating layer is hollow form, the copper conductor is located inside the crosslinked polyethylene insulating layer, the crosslinked polyethylene insulating layer outside contacts with the fire-retardant glass fine band of low smoke and zero halogen, the clearance department between the fire-retardant glass fine band of low smoke and zero halogen and the fire-retardant glass fine band of high smoke and the crosslinked polyethylene insulating layer is the fire-retardant glass fine rope of low smoke and zero halogen.

Preferably, the halogen-free low-smoke high-flame-retardant oxygen-isolating layer is positioned outside the halogen-free low-smoke high-flame-retardant glass fiber wrapping tape and is in a hollow column shape.

Preferably, the steel tape armor layer is positioned on the outer side of the halogen-free low-smoke high-flame-retardant oxygen-insulating layer, and the steel tape armor layer () is in a hollow column shape.

Preferably, the outer side of the steel strip armor layer is provided with a halogen-free low-smoke flame-retardant no-dripping outer sheath, and the halogen-free low-smoke flame-retardant no-dripping outer sheath is matched with the steel strip armor layer.

Preferably, the cross-sectional diameter of the copper conductor is smaller than that of the cross-sectional diameter of the crosslinked polyethylene insulating layer.

Compared with the prior art, the utility model has the beneficial effects that: through the combined action between the halogen-free low-smoke high-flame-retardant glass fiber rope, the halogen-free low-smoke high-flame-retardant glass fiber wrapping tape, the halogen-free low-smoke high-flame-retardant oxygen-isolating layer, the steel tape armoring layer and the halogen-free low-smoke flame-retardant non-dripping outer sheath, the flame-retardant cable has the excellent performances of low toxicity, low corrosion, no dripping during combustion and the like while the flame-retardant performance is improved, and the safety of the cable is further improved.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention.

In the figure: the cable comprises a copper conductor 1, a crosslinked polyethylene insulating layer 2, a halogen-free low-smoke high-flame-retardant glass fiber rope 3, a halogen-free low-smoke high-flame-retardant glass fiber wrapping tape 4, a halogen-free low-smoke high-flame-retardant oxygen-isolating layer 5, a steel tape armoring layer 6 and a halogen-free low-smoke flame-retardant no-dripping outer sheath 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1, the present invention provides a technical solution: the utility model provides a fire-retardant B1 level low pressure special type cable of low smoke and zero halogen, including copper conductor 1, crosslinked polyethylene insulating layer 2, the fire-retardant glass fiber tape of low smoke and zero halogen 3, the fire-retardant glass fiber tape of low smoke and zero halogen 4, the fire-retardant oxygen layer of low smoke and zero halogen 5, steel band armor (6) and the fire-retardant oversheath of dripping (7) of low smoke and zero halogen, crosslinked polyethylene insulating layer 2 is hollow form, copper conductor 1 is located inside crosslinked polyethylene insulating layer 2, the crosslinked polyethylene insulating layer 2 outside contacts with the fire-retardant glass fiber tape of low smoke and zero halogen 4, the clearance department between the fire-retardant glass fiber tape of low smoke and zero halogen 4 and crosslinked polyethylene insulating layer 2 is the fire-retardant glass fiber tape of low smoke and zero halogen 3.

Wherein, there is not steamed low cigarette high fire-retardant oxygen layer 5 that separates is located the 4 outsides of the fine band of halogen-free low cigarette high fire-retardant glass, there is not steamed low cigarette high fire-retardant oxygen layer 5 that separates for hollow column, steel strip armor 6 is located the 5 outsides of steamed low cigarette high fire-retardant oxygen layer that separate, steel strip armor 6 is hollow column, 6 outsides of steel strip armor are the oversheath 7 that drips of halogen-free low cigarette fire-retardant, there is not oversheath 7 that drips of halogen-free low cigarette fire-retardant and 6 looks adaptations of steel strip armor, 1 cross-sectional diameter of copper conductor is less than 2 cross-sectional diameters of crosslinked polyethylene insulating layer.

The working principle is as follows: the safety of circular telegram has been guaranteed in normal operating under the effect of crosslinked polyethylene insulating layer 2 to protection copper conductor 1, and there is not steamed low smoke high fire-retardant glass fine cord 3, there is not steamed low smoke high fire-retardant glass fiber band 4, there is not steamed low smoke high fire-retardant oxygen barrier 5, steel band armor 6 and the outer sheath 7 that does not drip of steamed low smoke fire-retardant has improved the fire behaviour of this scheme device, even meet the condition of a fire and can not produce a large amount of toxic gases or drip from the high altitude and cause the potential safety hazard.

While there have been shown and described the fundamental principles and essential features of the utility model and advantages thereof, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fire-retardant B1 level low pressure special type cable of low smoke and zero halogen, includes copper conductor (1), crosslinked polyethylene insulating layer (2), there is not steamed low smoke high fire-retardant glass fine band (3), there is not steamed low smoke high fire-retardant glass ribbon band (4), there is not steamed low smoke high fire-retardant oxygen layer (5) that separate, steel band armor (6) and the fire-retardant oversheath (7) that do not drip of steamed low smoke, its characterized in that: crosslinked polyethylene insulating layer (2) are hollow form, inside copper conductor (1) was located crosslinked polyethylene insulating layer (2), crosslinked polyethylene insulating layer (2) outside contacted with the fine band (4) of the glass of the high fire-retardant of zero halogen low smoke, the clearance department between the fine band (4) of the glass of the high fire-retardant of zero halogen low smoke and crosslinked polyethylene insulating layer (2) is for there being no halogen low smoke high fire-retardant glass fine rope (3).

2. The low-smoke halogen-free flame-retardant B1-grade low-voltage special cable according to claim 1, characterized in that: the halogen-free low-smoke high-flame-retardant oxygen-isolating layer (5) is located on the outer side of the halogen-free low-smoke high-flame-retardant glass fiber wrapping tape (4), and the halogen-free low-smoke high-flame-retardant oxygen-isolating layer (5) is in a hollow column shape.

3. The low-smoke halogen-free flame-retardant B1-grade low-voltage special cable according to claim 1, characterized in that: the steel strip armor layer (6) is located on the outer side of the halogen-free low-smoke high-flame-retardant oxygen-isolating layer (5), and the steel strip armor layer (6) is in a hollow column shape.

4. The low-smoke halogen-free flame-retardant B1-grade low-voltage special cable according to claim 1, characterized in that: the outer side of the steel tape armor layer (6) is provided with a halogen-free low-smoke flame-retardant no-dripping outer sheath (7), and the halogen-free low-smoke flame-retardant no-dripping outer sheath (7) is matched with the steel tape armor layer (6).

5. The low-smoke halogen-free flame-retardant B1-grade low-voltage special cable according to claim 1, characterized in that: the diameter of the cross section of the copper conductor (1) is smaller than that of the cross section of the crosslinked polyethylene insulating layer (2).