CN202632843U - Intrinsically safe flame retarding control cable - Google Patents

Abstract

The utility model discloses an intrinsically safe flame retarding control cable, comprising a plurality of groups of wire cores. Each wire core is formed by twisting two strands to four strands conductors. Each strand conductor is coated with a polyvinyl chloride insulation layer. Each group of the wire cores is coated with a copper strip double-layer separated shielding layer. The plurality of groups of wire cores coated with the separated shielding layers are coated with a polyvinyl chloride wrapping tape, a copper strip main shielding layer, a flame retarding layer, a polyester stripe, an armor layer and an over sheath. The flame retarding control cable is simple in structure and low in cost. The flame retarding layer is disposed in the cable, so that the flame retarding layer can effectively prevent the cable from burning. The cable has preferably mechanical strength and is suitable to be used in various severe environments.

Description

A flame retardant control cable for intrinsic safety

technical field

The utility model relates to a cable, in particular to a flame-retardant control cable for intrinsic safety. the

Background technique

In the construction of the national economy, cables have played a huge role as a carrier for transmitting cables and disseminating information. With the development of the economy, all walks of life have different requirements for the performance of cables, especially for cables used in harsh environments. Product performance has more specific requirements. For example, the cables used in wind power plants are required to be resistant to low temperature and torsion; the cables used in the metallurgical industry are required to be resistant to high temperature and corrosion; corrosion resistance. the

The existing flame retardant cable production process is simple, and the mechanical properties are not high. The single sheath material and extrusion process make it poor in coating, resulting in reduced shrinkage. At the same time, it is not resistant to corrosion in the laying site environment, high temperature resistance Poor performance and short cable life. the

Utility model content

The purpose of the utility model is to provide an intrinsically safe flame-retardant control cable to solve the problem that the cable in the prior art has poor flame-retardant performance and cannot meet the use requirements in harsh environments. the

In order to achieve the above object, the technical scheme adopted in the utility model is:

An intrinsically safe flame-retardant control cable, characterized in that it includes an array of wire cores, each group of wire cores is composed of two to four strands of conductors twisted together, each conductor is covered with a polyvinyl chloride insulating layer, and each group of wires The core is covered with a double-layer copper tape shielding layer, and the array wire cores covered with the separate shielding layer are sequentially covered with polyvinyl chloride wrapping tape, copper tape overall shielding layer, flame retardant layer, polyester tape , armor layer and outer sheath. the

The flame-retardant control cable for intrinsic safety is characterized in that: the flame-retardant layer is made of low-smoke halogen-free polyolefin material. the

The flame-retardant control cable for intrinsic safety is characterized in that: the outer sheath is made of nitrile rubber. the

The beneficial effects of the utility model are:

The utility model has the advantages of simple structure and low production cost, and the cable is provided with a flame-retardant layer, which can effectively prevent the burning of the cable, has good mechanical strength, and is suitable for various severe environments. the

Description of drawings

Fig. 1 is the structural representation of the utility model. the

Detailed ways

As shown in Figure 1, the utility model includes an array of wire cores 1, each group of wire cores 1 is formed by twisting two to four strands of conductors, each conductor is covered with a polyvinyl chloride insulating layer 2, and each group of wire cores Covered with copper tape double-layer sub-shielding layer 3, the outside of the array wire core 1 coated with sub-shielding layer 3 is coated with polyvinyl chloride wrapping tape 4, copper tape overall shielding layer 5, flame retardant layer 6, polyvinyl chloride Ester tape 7, armor layer 8 and outer sheath 9. the

The flame-retardant layer 6 is made of low-smoke halogen-free polyolefin material. The outer sheath 9 is made of nitrile rubber material. the

Claims (3)

1. an essential safety is used fire-retardant control cable; It is characterized in that: include the array core; Every group of core constitutes by two strands to four strands conductors are stranded; Per share conductor is coated with the polyvinyl chloride insulation layer, and every group of core is coated with copper strips double-layer shielding layer, and the array core after the said coating sub-shield is coated with polyvinyl chloride twining package tape, the total screen of copper strips, flame-retardant layer, polyester belt, armour and oversheath outward successively.

2. a kind of essential safety according to claim 1 is used fire-retardant control cable, it is characterized in that: said flame-retardant layer adopts the low-smoke halogen-free polyolefin material to process.

3. a kind of essential safety according to claim 1 is used fire-retardant control cable, it is characterized in that: said oversheath adopts nitrile rubber to process.

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