CN219418567U

CN219418567U - Flame-retardant communication cable for coal mine

Info

Publication number: CN219418567U
Application number: CN202320228191.1U
Authority: CN
Inventors: 刘笠; 王伟; 杜超; 刘晶晶
Original assignee: Tianjin Liuyi Special Cable Co ltd
Current assignee: Tianjin Liuyi Special Cable Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-07-25
Anticipated expiration: 2033-02-16

Abstract

The utility model relates to a flame-retardant communication cable for a coal mine, which belongs to the field of communication cables and comprises a flame-retardant sheath, a waterproof layer, an insulating layer and a cable; the waterproof layer, the insulating layer and the cable are all provided with a plurality of waterproof layers; the cables are arranged in the insulating layer; the insulating layer is provided with a placement groove, and the cable is positioned in the placement groove; the water-resistant layer is arranged on the outer periphery side of the insulating layer; the plurality of water-blocking layers are uniformly distributed in the flame-retardant sheath. The utility model can separate and support a plurality of cables, and avoid signal interference.

Description

Flame-retardant communication cable for coal mine

Technical Field

The utility model relates to the field of communication cables, in particular to a flame-retardant communication cable for a coal mine.

Background

The standard layer stranded flame-retardant communication optical cable for coal mines is characterized in that optical fibers are sleeved into a bundle tube made of high-modulus plastic, water-blocking compounds are filled in the tube, then a phosphorized steel wire is used for reinforcing SZ to be stranded into a cable, water-blocking cable paste is filled in a cable core in production to block water, an inner sheath is bonded by steel-polyethylene, and then a blue flame-retardant PVC outer sheath is used. However, the current communication cable has higher requirements for flame retardant effect, tensile effect and mechanical effect, and thus must be improved in cable structure to meet such requirements. In order to ensure good transmission performance, the cores in the communication cable are all made of copper wires, and if the number of the cable cores in the communication cable is too large, mutual interference among signals is easily caused, so that the transmission quality is affected.

Disclosure of Invention

The utility model aims to solve the problems in the background technology and provides a flame-retardant communication cable for a coal mine, which can separate and support a plurality of cables and avoid signal interference.

The technical scheme of the utility model is as follows: a flame-retardant communication cable for coal mines comprises a flame-retardant sheath, a waterproof layer, an insulating layer and a cable;

the waterproof layer, the insulating layer and the cable are all provided with a plurality of waterproof layers; the cables are arranged in the insulating layer; the insulating layer is provided with a placement groove, and the cable is positioned in the placement groove; the water-resistant layer is arranged on the outer periphery side of the insulating layer; the plurality of water-blocking layers are uniformly distributed in the flame-retardant sheath.

Preferably, a separation frame is arranged in the flame-retardant sheath; the plurality of water-blocking layers are all clamped on the separating frame.

Preferably, the separating frame is provided with a positioning groove; the positioning grooves are arranged in a plurality of corresponding water-blocking layers; the plurality of water-resisting layers are respectively embedded and arranged in the plurality of positioning grooves; the positioning groove is of a U-shaped structure.

Preferably, steel wires are arranged in the separation frame; the steel wire is positioned in the middle of the separation frame.

Preferably, the outer side of the separating frame is abutted with the inner wall of the flame-retardant sheath.

Preferably, the outer peripheral side of the cable is wrapped with insulating paint.

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

according to the utility model, the flame-retardant sheath can provide protection for the separation frame, the waterproof layers, the insulating layers and the cables, so that the flame-retardant sheath is prevented from being burnt due to the influence of external high temperature, the separation frame supports the waterproof layers, so that the waterproof layers are separated from each other, the damage of the waterproof layers caused by winding of the waterproof layers can be avoided, the waterproof layers are separated, the cables in the waterproof layers can be effectively prevented from being connected with each other, the increase of resistance caused by the fold of the cables is avoided, the high temperature is generated, the cables in the waterproof layers are separated by the insulating layers, the signal interference between the cables is prevented, the phenomenon of short circuit can not occur after the cables in the insulating layers are contacted by the insulating paint, and after the waterproof layers are separated by the separation frame, the cables are not easy to be connected together even after the cables are damaged, the short circuit is avoided, and the service life of the cables can be prolonged; the separation frame and the flame-retardant sheath can be reinforced through the steel wire, and the tensile strength of the flame-retardant sheath is improved, so that the flame-retardant sheath is conveniently pushed to move during wiring, and the flame-retardant sheath is prevented from being broken during dragging.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Reference numerals: 1. a flame retardant sheath; 2. a separation frame; 201. a positioning groove; 3. a water blocking layer; 4. an insulating layer; 5. a cable; 6. and (3) a steel wire.

Detailed Description

As shown in fig. 1, the flame-retardant communication cable for coal mines provided by the utility model comprises a flame-retardant sheath 1, a waterproof layer 3, an insulating layer 4 and a cable 5;

the waterproof layer 3, the insulating layer 4 and the cable 5 are all provided with a plurality of waterproof layers; a plurality of cables 5 are arranged in the insulating layer 4; the insulating layer 4 is provided with a placement groove, and the cable 5 is positioned in the placement groove; the water blocking layer 3 is provided on the outer peripheral side of the insulating layer 4; the plurality of water-blocking layers 3 are uniformly distributed in the flame-retardant sheath 1.

A separation frame 2 is arranged in the flame-retardant sheath 1; the plurality of water-blocking layers 3 are clamped on the separating frame 2. The separating frame 2 is provided with a positioning groove 201; the positioning groove 201 is provided with a plurality of positioning grooves corresponding to the waterproof layers 3; the plurality of water-blocking layers 3 are respectively embedded and arranged in the plurality of positioning grooves 201; the positioning groove 201 has a U-shaped structure. A steel wire 6 is arranged in the separation frame 2; the steel wire 6 is positioned in the middle of the separation frame 2. The outer side of the separation frame 2 is abutted against the inner wall of the flame-retardant sheath 1. The outer peripheral side of the cable 5 is wrapped with insulating paint.

In this embodiment, the flame retardant sheath 1 can provide protection for the separation frame 2, the water-resistant layer 3, the insulating layer 4 and the cable 5, so that the flame retardant sheath 1 is prevented from being influenced by external high temperature to cause the combustion of the flame retardant sheath 1, the separation frame 2 supports the water-resistant layers 3, so that the water-resistant layers 3 are separated from each other, the water-resistant layers 3 can be prevented from being wound to cause the breakage of the water-resistant layers 3, the cables 5 in the water-resistant layers 3 can be effectively prevented from being connected with each other, the cable 5 is prevented from being wrinkled to cause resistance increase, high temperature is generated, the cables 5 in the water-resistant layers 3 are separated through the insulating layer 4, signal interference is prevented from being generated between the cables 5 and the cables 5, after the cables 5 in the insulating layer 4 are contacted through insulating paint, the phenomenon of short circuit is avoided, and after the separation frame 2 separates the water-resistant layers 3, the cables 5 and the cables 5 are prevented from being connected together even after breakage, and the short circuit is avoided, so that the service life of the cables 5 can be prolonged; the separation frame 2 and the flame-retardant sheath 1 can be reinforced through the steel wire 6, and the tensile strength of the flame-retardant sheath is improved, so that the flame-retardant sheath 1 is pushed to move during wiring conveniently, and the flame-retardant sheath 1 is prevented from being broken during dragging.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The flame-retardant communication cable for the coal mine is characterized by comprising a flame-retardant sheath (1), a waterproof layer (3), an insulating layer (4) and a cable (5);

the waterproof layer (3), the insulating layer (4) and the cable (5) are all provided with a plurality of waterproof layers; the cables (5) are arranged in the insulating layer (4); the insulating layer (4) is provided with a placement groove, and the cable (5) is positioned in the placement groove; the water-resistant layer (3) is arranged on the outer periphery side of the insulating layer (4); a plurality of water-resistant layers (3) are uniformly distributed in the flame-retardant sheath (1); a separating frame (2) is arranged in the flame-retardant sheath (1); the plurality of water-resisting layers (3) are clamped on the separating frame (2); a positioning groove (201) is arranged on the separation frame (2); the positioning grooves (201) are arranged in a plurality corresponding to the water-resisting layers (3); the plurality of water-resisting layers (3) are respectively embedded and arranged in the plurality of positioning grooves (201); the positioning groove (201) is of a U-shaped structure; a steel wire (6) is arranged in the separation frame (2); the steel wire (6) is positioned in the middle of the separation frame (2); the outer side of the separation frame (2) is abutted with the inner wall of the flame-retardant sheath (1); the outer periphery side of the cable (5) is wrapped with insulating paint.