CN216772898U

CN216772898U - Low-smoke halogen-free flame-retardant twisted pair special cable

Info

Publication number: CN216772898U
Application number: CN202122961494.8U
Authority: CN
Inventors: 崔建军
Original assignee: Yangzhou Shidai Electronics Co ltd
Current assignee: Shanghai Tengruina Chemical Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-06-17
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a low-smoke halogen-free flame-retardant twisted-pair special cable which comprises a lead, wherein an insulating layer is fixedly connected to the outer side of the lead, a heat insulating layer is fixedly connected to the outer side of the insulating layer, a supporting net made of elastic materials is fixedly connected to the outer side of the heat insulating layer, a magnesium hydroxide particle layer is arranged on the outer side of the supporting net, a heat conducting layer is arranged on the outer side of the magnesium hydroxide particle layer, a fireproof layer is fixedly connected to the outer side of the heat conducting layer, and a low-smoke halogen-free wrapping layer is fixedly connected to the outer side of the fireproof layer. The utility model has reasonable design and ingenious design, greatly reduces the damage to the wires in the cable when the cable is burnt, and avoids economic loss caused by cable burning.

Description

Low-smoke halogen-free flame-retardant twisted pair special cable

Technical Field

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

Background

Cable is a generic term for optical cables, electrical cables, and the like. The cable has many purposes, is mainly used for controlling installation, connecting equipment, transmitting power and other multiple functions, and is a common and indispensable object in daily life. The special cable has special purposes, and can be used in special occasions at present, along with rapid development of national economy, the cable is widely applied to densely populated places, such as thermal power stations, subway stations, power plants, high-rise buildings, military facilities, oil platforms and other various fields, so that requirements of people on the quality and functions of the cable are higher and higher, and further, low-smoke halogen-free wires are researched and developed, wherein the low-smoke halogen-free wires refer to halogen substances of insulating layer materials of the wires, and do not release halogen-containing gas under the condition of combustion, and the concentration of generated smoke is lower.

However, in the prior art, the flame retardant effect of the existing low-smoke halogen-free wire is poor, when a fire disaster occurs, the cable is flammable, the fire is increased, the rescue efficiency is affected, and serious economic loss is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a low-smoke halogen-free flame-retardant twisted-pair special cable, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a fire-retardant pair twist special type cable of low smoke and zero halogen, includes the wire, the outside fixedly connected with insulating layer of wire, the outside fixedly connected with insulating layer, the outside fixedly connected with of insulating layer has the supporting network of elastic material, the supporting network outside is equipped with the magnesium hydrate grained layer, the outside of magnesium hydrate grained layer is equipped with the heat-conducting layer, the outside fixedly connected with flame retardant coating of heat-conducting layer, the outside fixedly connected with low smoke and zero halogen of flame retardant coating winds the covering.

As a further improvement scheme of the technical scheme: the heat conducting layer is made of flexible foamed rubber.

As a further improvement scheme of the technical scheme: the fireproof layer is made of fireproof cotton.

As a further improvement scheme of the technical scheme: and a plurality of arc-shaped grooves are formed in the side wall of the inner ring of the heat conduction layer.

As a further improvement scheme of the technical scheme: the heat insulation layer is made of asbestos.

As a further improvement scheme of the technical scheme: the insulating layer is made of polyvinyl chloride insulating materials.

As a further improvement scheme of the technical scheme: the lead is formed by twisting a plurality of copper wires.

Compared with the prior art, the utility model has the beneficial effects that:

the plurality of arc-shaped grooves of the inner ring of the heat conduction layer can increase the friction force between the heat conduction layer and the magnesium hydroxide particle layer, so that the magnesium hydroxide particle layer is more firmly fixed between the heat conduction layer and the support net, when the cable is burnt, the fire-proof layer can prevent flame from burning to the inside of the cable, then the heat-conducting layer can absorb the heat on the fire-proof layer, and the heat is transferred to the magnesium hydroxide particle layer, the magnesium hydroxide particles in the magnesium hydroxide particle layer are decomposed when being heated, the heat transferred by the heat conducting layer can be absorbed by decomposition, the active magnesium oxide generated by decomposition is attached to the surface of the supporting net, the combustion is further prevented, and then the heat is further blocked by the heat insulating layer, the device reasonable in design, think about ingeniously, greatly reduced the cable receive the firing when, the damage that the inside wire of cable received has avoided because the economic loss that the cable burning produced.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic side sectional view of a low-smoke halogen-free flame-retardant twisted pair special cable according to the present invention;

fig. 2 is a schematic perspective view of a low-smoke halogen-free flame-retardant twisted pair special cable according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1 insulating layer, 2 insulating layers, 3 wires, 4 supporting nets, 5 magnesium hydroxide granular layers, 6 heat-conducting layers, 7 flame retardant coatings, 8 low smoke and zero halogen around the covering.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model. The utility model is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, in an embodiment of the present invention, a low-smoke halogen-free flame-retardant twisted pair special cable includes a wire 3, an insulating layer 2 is fixedly connected to an outer side of the wire 3, a heat insulating layer 1 is fixedly connected to an outer side of the insulating layer 2, a supporting net 4 made of an elastic material is fixedly connected to an outer side of the heat insulating layer 1, a magnesium hydroxide particle layer 5 is arranged on an outer side of the supporting net 4, a heat conducting layer 6 is arranged on an outer side of the magnesium hydroxide particle layer 5, a fire-proof layer 7 is fixedly connected to an outer side of the heat conducting layer 6, and a low-smoke halogen-free wrapping layer 8 is fixedly connected to an outer side of the fire-proof layer 7.

Specifically, the heat conducting layer 6 is made of flexible foamed rubber.

Specifically, the fireproof layer 7 is made of fireproof cotton.

Specifically, the side wall of the inner ring of the heat conduction layer 6 is provided with a plurality of arc-shaped grooves.

Specifically, the heat insulation layer 1 is made of asbestos.

Specifically, the insulating layer 2 is made of a polyvinyl chloride insulating material.

Specifically, the lead 3 is formed by twisting a plurality of copper wires.

The working principle of the utility model is as follows:

a plurality of arc recesses of 6 inner circles of heat-conducting layer can increase and the frictional force between magnesium hydrate grained layer 5, make magnesium hydrate grained layer 5 more firm between heat-conducting layer 6 and supporting network 4, when the cable received the firing, flame can be stopped to flame and inside the firing cable by flame retardant coating 7, heat on the heat-conducting layer 6 can be absorbed later, and with heat transfer to magnesium hydrate grained layer 5 on, magnesium hydrate granule in the magnesium hydrate grained layer 5 is heated and can take place to decompose, the heat that 6 transmission of heat-conducting layer came can be absorbed in the decomposition, the active magnesium oxide that the decomposition generated simultaneously is attached to the surface of supporting network 4, the going on of burning has further been prevented, later insulating layer 1 is further separation heat again, greatly reduced the cable when receiving the firing, the damage that inside wire 3 received.

The foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the utility model as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a fire-retardant pair twist special type cable of low smoke and zero halogen, includes wire (3), its characterized in that, outside fixedly connected with insulating layer (2) of wire (3), outside fixedly connected with insulating layer (1) of insulating layer (2), outside fixedly connected with supporting network (4) of elastic material of insulating layer (1), the supporting network (4) outside is equipped with magnesium hydrate grained layer (5), the outside of magnesium hydrate grained layer (5) is equipped with heat-conducting layer (6), outside fixedly connected with flame retardant coating (7) of heat-conducting layer (6), the outside fixedly connected with low smoke and zero halogen of flame retardant coating (7) winds covering (8).

2. The special low-smoke halogen-free flame-retardant twisted pair cable as claimed in claim 1, wherein the heat conducting layer (6) is made of flexible foamed rubber.

3. The special low-smoke halogen-free flame-retardant twisted pair cable as claimed in claim 1, wherein the fire-proof layer (7) is made of fire-proof cotton.

4. The special low-smoke halogen-free flame-retardant twisted-pair cable as claimed in claim 1, wherein a plurality of arc-shaped grooves are formed in the side wall of the inner ring of the heat conducting layer (6).

5. The special low-smoke halogen-free flame-retardant twisted pair cable as claimed in claim 1, wherein the heat-insulating layer (1) is made of asbestos.

6. The special low-smoke halogen-free flame-retardant twisted pair cable as claimed in claim 1, wherein the insulating layer (2) is made of polyvinyl chloride insulating material.

7. The special low-smoke halogen-free flame-retardant twisted pair cable as claimed in claim 1, wherein the conductor (3) is formed by twisting a plurality of copper wires.