CN220651700U

CN220651700U - Novel high-reliability fireproof flame-retardant single-core cable

Info

Publication number: CN220651700U
Application number: CN202322293743.XU
Authority: CN
Inventors: 卢梁; 许英威; 阮财评
Original assignee: Guangxi Dasheng Power Equipment Co ltd
Current assignee: Guangxi Dasheng Power Equipment Co ltd
Priority date: 2023-08-25
Filing date: 2023-08-25
Publication date: 2024-03-22
Anticipated expiration: 2033-08-25

Abstract

The utility model discloses a novel high-reliability fireproof flame-retardant single-core cable, which comprises a cable core, wherein the cable core comprises: a center conductor; the conductor is arranged at intervals from the second conductor and surrounds the central conductor; a winding conductor surrounding the outer sides of the conductor and the second conductor; and a semiconductive shielding layer is arranged on the outer side of the cable core. The novel high-reliability fireproof flame-retardant single-core cable provided by the utility model is rapidly sintered into a ceramic-shaped hard complete shell along with the temperature rise, so that the cable conductor is protected from being damaged by fire in a short time, and the normal operation of the cable under the condition of fire is ensured, thereby facilitating personnel evacuation and disaster rescue and control.

Description

Novel high-reliability fireproof flame-retardant single-core cable

Technical Field

The utility model relates to the technical field of cables, in particular to a novel high-reliability fireproof flame-retardant single-core cable.

Background

Fire is the disaster with the biggest and closely related hazard in human life, often causes great life safety hazard and property loss, and is the object of important criminal prevention in safety work. Cables act as electrical and information transmission carriers, which are also often the entry points for fires. In places with dense personnel, such as markets, subways, residential areas, entertainment places and the like, fire can be carried along the cable when a fire disaster occurs, or the cable can not work due to the fact that the cable is quickly burnt and cannot be electrified when the fire disaster occurs, so that great obstruction is brought to evacuation, alarming and disaster relief of personnel.

Disclosure of Invention

The utility model aims to provide a novel high-reliability fireproof flame-retardant single-core cable, which ensures that the cable maintains normal power supply for a certain time when a fire disaster occurs, ensures that personnel can safely evacuate and implement fire disaster rescue work for a sufficient time, and reduces fire disaster loss.

In order to achieve the above object, the present utility model provides the following technical solutions: novel fire-retardant single core cable of high reliability fire prevention, including the cable core, it includes:

a center conductor;

the conductor is arranged at intervals from the second conductor and surrounds the central conductor;

a winding conductor surrounding the outer sides of the conductor and the second conductor;

and a semiconductive shielding layer is arranged on the outer side of the cable core.

Preferably, a fire-resistant wrapping tape layer is arranged on the outer side of the semi-conductive shielding layer.

Preferably, the fireproof wrapping tape layer is made of ceramic fireproof silicon rubber and high-temperature-resistant glass fiber cloth in a mixed weaving mode.

Preferably, a flame-retardant crosslinked polyethylene insulating layer is arranged outside the fireproof wrapping tape layer.

Preferably, a metal mesh shielding layer is arranged outside the flame-retardant crosslinked polyethylene insulating layer.

Preferably, the metal mesh shielding layer comprises glass fiber winding wires which are wound around the outer side of the flame-retardant crosslinked polyethylene insulating layer, and the pitch of the glass fiber winding wires is not less than 1.5mm and not more than 3mm

Preferably, the metal mesh shielding layer further comprises an annular winding wire encircling the outer side of the glass fiber winding wire, and the interaction part of the annular winding wire and the glass fiber winding wire is encircling.

Preferably, the outer side of the metal mesh shielding layer is provided with a wear-resistant layer.

In the technical scheme, the novel high-reliability fireproof flame-retardant single-core cable provided by the utility model has the following beneficial effects: the fire-resistant wrapping tape of the cable is formed by calendaring and compounding ceramic fireproof silicon rubber and high-temperature-resistant glass fiber cloth, the fire-resistant wrapping tape is wrapped on a cable core to form a fireproof protection layer, when a fire disaster occurs, the fireproof protection layer begins to harden under the condition of flame or no flame at 350 ℃ or more, and is quickly sintered into a ceramic-shaped hard complete shell along with the rising of the temperature, so that a cable conductor is protected from being damaged by fire in a short time, and the normal operation of the cable under the condition of the fire disaster is ensured, so that personnel evacuation, disaster rescue and control are facilitated;

the round cable core structure formed by twisting the plurality of central conductors, the second conductors and the winding conductors ensures that the electric field generated by the cable is uniform and symmetrical, generates less heat, reduces the occurrence of cable safety accidents, and increases the flexibility and the pliability of the cable.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a metal mesh shielding layer according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a center conductor; 2. an electric conductor; 3. a second conductor; 4. a wound conductor; 5. a semiconductive shield layer; 6. a fire resistant tape layer; 7. a flame retardant crosslinked polyethylene insulation layer; 8. a metal mesh shielding layer; 9. and a wear-resistant layer.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1, the novel high-reliability fireproof flame-retardant single-core cable comprises a cable core, wherein a semiconductive shielding layer 5, a fireproof wrapping tape layer 6, a flame-retardant crosslinked polyethylene insulating layer 7, a metal mesh shielding layer 8 and a wear-resistant layer 9 are sequentially arranged on the outer side of the cable core, and the fireproof wrapping tape layer 6 is made of ceramic fireproof silicon rubber and high-temperature-resistant glass fiber cloth in a mixed weaving mode. The fire-resistant wrapping layer 6 of the cable is formed by calendaring and compounding ceramic fireproof silicon rubber and high-temperature-resistant glass fiber cloth, and is coated on a cable core to form a fireproof protection layer, when a fire disaster occurs, the fireproof protection layer begins to harden under the condition of 350 deaths, flames or no flames, and along with the rising of the temperature, the fireproof protection layer is quickly sintered into a ceramic-shaped hard complete shell, so that a cable conductor is protected from being damaged by fire in a short time, and the normal operation of the cable under the condition of the fire disaster is ensured, so that personnel evacuation, disaster rescue and control are facilitated.

Further, in the above embodiment, the cable core includes: the central conductor 1, by conductor 2 and second conductor 3 interval arrangement, and encircle central conductor 1 and encircle the wire winding conductor 4 outside conductor 2 and second conductor 3. The electric field generated by the cable is uniform and symmetrical, the generated heat is less, the generation of cable safety accidents is reduced, and meanwhile, the flexibility and the flexibility of the cable are increased.

As shown in fig. 2, the metal mesh shielding layer 8 in the above embodiment includes glass fiber wires around the outer side of the flame retardant crosslinked polyethylene insulation layer 7 and annular wires around the outer side of the glass fiber wires, where the interaction between the annular wires and the glass fiber wires is circumferential.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. Novel fire-retardant single core cable of high reliability fire prevention, its characterized in that includes the cable core, it includes:

a center conductor (1);

is arranged by a distance between the conductor (2) and the second conductor (3) and surrounds the central conductor (1);

a winding conductor (4) surrounding the outer sides of the conductor (2) and the second conductor (3);

and a semi-conductive shielding layer (5) is arranged on the outer side of the cable core.

2. The novel high-reliability fireproof flame-retardant single-core cable as claimed in claim 1, wherein the outer side of the semiconductive shielding layer (5) is provided with a fireproof wrapping tape layer (6).

3. The novel high-reliability fireproof flame-retardant single-core cable according to claim 2, wherein the fireproof wrapping tape layer (6) is made of ceramic fireproof silicon rubber and high-temperature-resistant glass fiber cloth mixed weaving.

4. A novel high reliability fire-proof flame-retardant single core cable according to claim 3, characterized in that the flame-retardant crosslinked polyethylene insulating layer (7) is arranged outside the fire-retardant wrapping tape layer (6).

5. The novel high-reliability fireproof flame-retardant single-core cable as claimed in claim 4, wherein the flame-retardant crosslinked polyethylene insulating layer (7) is externally provided with a metal mesh shielding layer (8).

6. The novel high-reliability fireproof flame-retardant single-core cable according to claim 5, wherein the metal mesh shielding layer (8) comprises glass fiber winding wires which encircle the outer side of the flame-retardant crosslinked polyethylene insulating layer (7), and the pitch of the glass fiber winding wires is not less than 1.5mm and not more than 3mm.

7. The novel high-reliability fireproof flame-retardant single-core cable as claimed in claim 6, wherein the metal mesh shielding layer (8) further comprises annular wires surrounding the outer sides of the glass fiber wires, and the interaction part of the annular wires and the glass fiber wires is surrounding.

8. The novel high-reliability fireproof flame-retardant single-core cable as claimed in claim 5, wherein the outer side of the metal mesh shielding layer (8) is provided with a wear-resistant layer (9).