CN212010494U

CN212010494U - Low-smoke halogen-free low-toxicity fireproof cable for public safety

Info

Publication number: CN212010494U
Application number: CN202021112216.4U
Authority: CN
Inventors: 杨永佳; 李汉枫; 王俊坡
Original assignee: Guangdong Wanruitong Cable Industry Co Ltd
Current assignee: Guangdong Wanruitong Cable Industry Co Ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-11-24
Anticipated expiration: 2030-06-16

Abstract

The utility model provides a low smoke and zero halogen low toxicity fireproof cable for public safety, includes the cable body, the cable body includes insulating layer, flame retardant coating, inoxidizing coating, restrictive coating and inner core. The utility model discloses an at inside insulating layer, flame retardant coating, inoxidizing coating, restrictive coating and the inner core that sets up of cable body, and insulating layer, flame retardant coating and inoxidizing coating adopt multilayer crowded structure altogether, the flame retardant coating is located the inside of insulating layer, and the inoxidizing coating is located the inside of flame retardant coating, the restrictive coating is located the inside of inoxidizing coating, and the inside magnesium hydrate powder that the inner core is located the restrictive coating is provided with a plurality ofly, utilizes the fire behavior of the inside packing of fireproof coating, flame retardant coating and restrictive coating on insulating layer surface to improve the fire rating of cable effectively, and when the cable contacts the fire source, because the effect of magnesium hydrate powder can play fine back-fire relief effect, avoids the inside inner core of cable to receive the damage effectively, and the cable practicality is better.

Description

Low-smoke halogen-free low-toxicity fireproof cable for public safety

Technical Field

The utility model relates to the technical field of cables, especially, relate to a low smoke and zero halogen low toxicity fireproof cable for public safety.

Background

Fireproof cable, the wider fireproof cable of present stage application mainly has two main types of UL series flame retarded cable and fire-retardant low smoke and zero halogen cable, and low smoke and zero halogen cable is just met the back volume of generating smoke of fire as the name implies and is few, does not contain halogen's cable, and low smoke and zero halogen's principle just lets the cable can not produce a lot of poison gas and smog when burning in flame to let people can not cause very big injures and deaths in the burning, improved the survival rate of people in the conflagration greatly.

The existing fireproof cable has certain defects when in use, the traditional fireproof cable is poor in fireproof performance and low in fireproof grade, so that the temperature of the inner surface of the fireproof cable is rapidly increased after the fireproof cable is contacted with a fire source, and the fireproof cable cannot be applied to places with different properties.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

For solving the technical problem who exists among the background art, the utility model provides a low toxicity public safety uses fireproof cable is hanged down to low smoke and zero halogen, and it is relatively poor to have solved traditional fireproof cable's fire behavior, and fire classification is lower for fireproof cable is after contacting the fire source, and its inner surface temperature rises fast, makes fireproof cable can't be suitable for the problem of using in different nature place.

(II) technical scheme

The utility model provides a low smoke and zero halogen low toxicity fireproof cable for public safety, which comprises a cable body, the cable body includes insulating layer, flame retardant coating, inoxidizing coating, restrictive coating and inner core, and insulating layer, flame retardant coating and inoxidizing coating adopt multilayer crowded structure altogether, the flame retardant coating is located the inside of insulating layer, and the inoxidizing coating is located the inside of flame retardant coating, the restrictive coating is located the inside of inoxidizing coating, and the inside that the inner core is located the restrictive coating is provided with a plurality ofly.

Preferably, the stainless steel wire is wound inside the sheath layer and on the surface of the inner core.

Preferably, the inner core comprises a copper core and a copper sleeve, and the copper core is located inside the copper sleeve.

Preferably, the protective layer comprises a reinforced fiber belt and a radiation-proof PVC sheath, and the reinforced fiber belt is positioned inside the radiation-proof PVC sheath.

Preferably, the sheath layer is filled with magnesium hydroxide powder.

Preferably, the insulating layer is made of flame-retardant cross-linked polyethylene, and the surface of the insulating layer is sprayed with a fireproof coating.

Preferably, the sheath layer is a net cover woven by stainless steel wires.

Compared with the prior art, the above technical scheme of the utility model following profitable technological effect has: the cable comprises a cable body, wherein an insulating layer, a fireproof layer, a protective layer, a sheath layer and inner cores are arranged in the cable body, the insulating layer, the fireproof layer and the protective layer are of a multilayer co-extrusion structure, the fireproof layer is arranged in the insulating layer, the protective layer is arranged in the fireproof layer, the sheath layer is arranged in the protective layer, a plurality of inner cores are arranged in the sheath layer, stainless steel wires are wound in the sheath layer and on the surface of the inner cores, the inner cores comprise copper cores and copper sleeves, the copper cores are arranged in the copper sleeves, the protective layer comprises a reinforcing fiber band and an anti-radiation PVC sheath, the reinforcing fiber band is arranged in the anti-radiation PVC sheath, magnesium hydroxide powder is filled in the sheath layer, the insulating layer is made of flame-retardant cross-linked polyethylene, the surface of the insulating layer is sprayed with fireproof coating, the fireproof coating on the surface of the insulating layer and the magnesium hydroxide powder filled in the sheath layer, the fireproof grade of the cable is improved, and when the cable contacts a fire source, the inner core inside the cable is effectively prevented from being damaged due to the good fire-retardant effect of the magnesium hydroxide powder, so that the practicability of the cable is good.

Drawings

Fig. 1 is the utility model provides a low smoke and zero halogen low toxicity fireproof cable for public safety's structural schematic diagram.

Fig. 2 is the utility model provides a low smoke and zero halogen low toxicity is protective layer's among fire prevention cable for public safety structure sketch map.

Fig. 3 is the schematic structural diagram of the inner core in the low-smoke halogen-free low-toxicity fire-proof cable for public security provided by the utility model.

Fig. 4 is the utility model provides a low smoke and zero halogen low toxicity sheath layer's among fire prevention cable for public safety structure sketch map for a public safety.

Reference numerals: 1. a cable body; 11. an insulating layer; 12. a fire barrier layer; 13. a protective layer; 131. a reinforcing fiber tape; 132. a radiation-proof PVC sheath; 14. a sheath layer; 15. an inner core; 151. a copper core; 152. a copper sleeve; 16. stainless steel wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-4, the utility model provides a low smoke and zero halogen low toxicity fireproof cable for public safety, including cable body 1, cable body 1 includes insulating layer 11, flame retardant coating 12, inoxidizing coating 13, restrictive coating 14 and inner core 15, and insulating layer 11, flame retardant coating 12 and inoxidizing coating 13 adopt multilayer crowded structure altogether, flame retardant coating 12 is located the inside of insulating layer 11, and inoxidizing coating 13 is located the inside of flame retardant coating 12, restrictive coating 14 is located the inside of inoxidizing coating 13, and inner core 15 is located the inside of restrictive coating 14 and is provided with a plurality ofly, the inside of restrictive coating 14 and the surface winding that is located inner core 15 have stainless steel wire 16.

The utility model discloses in, through the fire retardant coating on insulating layer 11 surface, the fire prevention performance of cable can be improved effectively to the inside magnesium hydrate powder of filling of flame retardant coating 12 and restrictive coating 14, make the fire-retardant rating of cable obtain promoting, and when the cable contacted the fire source, because the effect of magnesium hydrate powder can play fine back the fire relief effect, avoid the inside inner core of cable to receive the damage effectively, in addition, the cable is because inside sets up stainless steel wire 16, can improve the tensile and the anti tear performance of cable by a wide margin, the cable practicality is better.

In an alternative embodiment, inner core 15 includes a copper core 151 and a copper jacket 152, with copper core 151 being located inside copper jacket 152.

It should be noted that, the inner core 15 is formed by combining the copper sleeve 152 and the copper core 151, so that the fireproof performance of the copper core 151 can be greatly improved, and the copper core 151 inside the cable is effectively prevented from being damaged in a fire.

In an alternative embodiment, the protective layer 13 includes a reinforcing fiber tape 131 and a radiation-protective PVC jacket 132, and the reinforcing fiber tape 131 is located inside the radiation-protective PVC jacket 132.

It should be noted that the protective effect of the cable is further improved by the protective layer 13.

In an alternative embodiment, the sheath layer 14 is filled with magnesium hydroxide powder, and the sheath layer 14 is woven with stainless steel wires to form a mesh.

It should be noted that the magnesium hydroxide powder has a good fire retardant performance, and has a good fire retardant effect on the inner core 15 inside the cable.

In an alternative embodiment, the insulating layer 11 is made of flame-retardant cross-linked polyethylene, and the surface of the insulating layer 11 is sprayed with a fire-retardant coating.

It should be noted that the fire-retardant performance of the cable is further improved by spraying a fire-retardant coating on the surface of the insulating layer 11.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a low smoke and zero halogen low toxicity fireproof cable for public security, a serial communication port, including cable body (1), cable body (1) includes insulating layer (11), flame retardant coating (12), inoxidizing coating (13), restrictive coating (14) and inner core (15), and insulating layer (11), flame retardant coating (12) and inoxidizing coating (13) adopt the multilayer to crowd the structure altogether, flame retardant coating (12) are located the inside of insulating layer (11), and inoxidizing coating (13) are located the inside of flame retardant coating (12), restrictive coating (14) are located the inside of inoxidizing coating (13), and the inside that inner core (15) are located restrictive coating (14) is provided with a plurality ofly.

2. A low smoke zero halogen low toxicity fire-proof cable for public safety according to claim 1, characterized in that the stainless steel wire (16) is wound inside the sheath layer (14) and on the surface of the inner core (15).

3. A low smoke zero halogen low toxicity fire-resistant cable for public safety according to claim 1, wherein the inner core (15) comprises a copper core (151) and a copper sheath (152), and the copper core (151) is located inside the copper sheath (152).

4. A low smoke zero halogen low toxicity fire-resistant cable for public safety according to claim 1, wherein said protective layer (13) comprises a reinforced fiber tape (131) and a radiation-proof PVC sheath (132), and the reinforced fiber tape (131) is located inside the radiation-proof PVC sheath (132).

5. The low smoke zero halogen low toxicity fireproof cable for public safety of claim 1, wherein the sheath layer (14) is filled with magnesium hydroxide powder.

6. The low-smoke halogen-free low-toxicity fireproof cable for public safety according to claim 1, wherein the insulating layer (11) is made of flame-retardant cross-linked polyethylene, and the surface of the insulating layer (11) is sprayed with a fireproof coating.

7. A low smoke zero halogen low toxicity fire-proof cable for public safety according to claim 1, characterized in that the sheath layer (14) is a net woven from stainless steel wires.