CN213070698U

CN213070698U - Fire-resistant double-layer shielding control cable

Info

Publication number: CN213070698U
Application number: CN202021305170.8U
Authority: CN
Inventors: 王正取
Original assignee: YUNNAN YUNLAN CABLE (GROUP) CO Ltd
Current assignee: YUNNAN YUNLAN CABLE (GROUP) CO Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-04-27
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses a fire-resistant double-layer shielding control cable, which comprises an outer shielding layer; the inner cavity of the outer shielding layer is provided with a first inner shielding layer and a plurality of second inner shielding layers; the cross section of the first inner shielding layer is circular, the cross section of the second inner shielding layer is sector-shaped, and the second inner shielding layers are distributed in an annular array by taking the center of the first inner shielding layer as an array center; control signal cable cores are arranged in the first inner shielding layer and the second inner shielding layer; a filling layer is arranged at the gap between the control signal cable cores; the outside cladding of outer shielding layer has the restrictive coating. In the utility model, the cross section of the first inner shielding layer is circular, the cross section of the second inner shielding layer is sector-shaped, and the plurality of second inner shielding layers are distributed in an annular array by taking the center of the first inner shielding layer as the center of the array; adopt above-mentioned technical scheme, increased the area of shielding layer on the whole, the design of cooperation outer shielding layer compares current shielding control cable, has better shielding jam-proof effect.

Description

Fire-resistant double-layer shielding control cable

Technical Field

The utility model relates to the technical field of cables, in particular to fire-resistant type double-deck shielding control cable.

Background

The control cable is mainly applied to connecting wires of electrical instruments and transmission lines of automatic control systems under certain AC rated voltages, has excellent performances of oil resistance, water resistance, wear resistance, acid and alkali resistance, various corrosive gases, aging resistance, no combustion and the like, and is suitable for industries such as metallurgy, electric power, petrifaction and the like. The performance of the control cable depends on the smoothness of signal transmission, and whether the signal can be smoothly transmitted depends on whether the cable has good shielding and interference prevention effects.

The shielding interference prevention effect of the shielding control cable in the prior art is poor, and a space for further improvement is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a fire-resistant type double-deck shielding control cable possesses good shielding jam-proof effect.

In order to solve the technical problem, the utility model discloses a technical scheme does:

a fire-resistant double-layer shielding control cable comprises an outer shielding layer; the inner cavity of the outer shielding layer is provided with a first inner shielding layer and a plurality of second inner shielding layers; the cross section of the first inner shielding layer is circular, the cross section of the second inner shielding layer is sector-shaped, and the plurality of second inner shielding layers are annularly distributed by taking the center of the first inner shielding layer as an array center; control signal cable cores are arranged in the first inner shielding layer and the second inner shielding layer; a filling layer is arranged at a gap between the control signal cable cores; the outside cladding of outer shielding layer has the restrictive coating.

Furthermore, a flame-retardant fire-resistant layer is arranged between the outer shielding layer and the sheath layer.

Furthermore, 3-6 second inner shielding layers are arranged.

Furthermore, the first inner shielding layer and the second inner shielding layer are both a corrugated copper pipe or a corrugated aluminum pipe; the outer shielding layer is made of a magnetic alloy material.

Furthermore, a filling rope is arranged at a gap between the second inner shielding layers.

The utility model has the advantages that:

(1) in the utility model, the cross section of the first inner shielding layer is circular, the cross section of the second inner shielding layer is sector-shaped, and the plurality of second inner shielding layers are distributed in an annular array by taking the center of the first inner shielding layer as the center of the array; adopt above-mentioned technical scheme, increased the area of shielding layer on the whole, the design of cooperation outer shielding layer compares current shielding control cable, has better shielding jam-proof effect.

(2) The utility model provides a cable has rationally utilized the cable inner space, under the whole shielding jam-proof effect prerequisite of assurance cable, cable production and processing is not complicated, therefore is favorable to the enlarged production of enterprise.

Drawings

Fig. 1 is a schematic view of a cross-sectional structure of the fire-resistant double-layer shielding control cable of the present invention.

In the figure, 1-outer shielding layer, 2-first inner shielding layer, 3-second inner shielding layer, 4-control signal cable core, 5-filling layer, 6-sheath layer, 7-flame retardant fire-resistant layer and 8-glass fiber rope.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, a fire-resistant double-layer shielding control cable includes an outer shielding layer 1; a first inner shielding layer 2 and a plurality of second inner shielding layers 3 are arranged in the inner cavity of the outer shielding layer 1; the cross section of the first inner shielding layer 2 is circular, the cross section of the second inner shielding layer 3 is sector-shaped, and the second inner shielding layers 3 are distributed in an annular array by taking the center of the first inner shielding layer 2 as an array center; the first inner shielding layer 2 and the second inner shielding layer 3 are both internally provided with control signal cable cores 4, each control signal cable core 4 comprises a conductor and conductor insulation, and the conductor insulation is a polyethylene insulation layer; a filling layer 5 is arranged at the gap between the control signal cable cores 4; the outside cladding of outer shielding layer 1 has restrictive coating 6, and restrictive coating 6 is fire-retardant polyvinyl chloride sheath, and fire-retardant polyvinyl chloride sheath is not only fire resistance good, but also has fine elasticity and compliance, makes the installation of fire-resistant type double-deck shielding control cable is more nimble, convenient.

The cross section through setting up first internal shield layer 2 is circular form, and the cross section of second internal shield layer 3 is the sector form, and a plurality of second internal shield layers 3 use the center of first internal shield layer 2 to distribute as array center annular array, makes the shielding layer have bigger shielding area like this, and the design of sector and circular cross section has better laminating performance, the processing production of being convenient for.

Specifically, in order to improve the fire resistance, a flame-retardant fire-resistant layer 7 is further arranged between the outer shielding layer 1 and the sheath layer 6. The flame-retardant fire-resistant layer 7 is made of flame-retardant fire-resistant materials.

Specifically, 3 to 6 second inner shield layers 3 are provided. During installation, different types of control signal cable cores can be respectively installed in different second inner shielding layers 3.

Specifically, the first inner shielding layer 2 and the second inner shielding layer 3 are both a corrugated copper pipe or a corrugated aluminum pipe; the outer shielding layer 1 is made of a magnetic alloy material.

Specifically, in order to improve the compactness of the cable, a filling rope 8 is arranged at the gap between the second inner shielding layers 3. The filling strand 8 can be a spun yarn, a polyester tape or a glass fiber yarn.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A fire-resistant double-layer shielding control cable comprises an outer shielding layer (1); the method is characterized in that: a first inner shielding layer (2) and a plurality of second inner shielding layers (3) are arranged in the inner cavity of the outer shielding layer (1); the cross section of the first inner shielding layer (2) is circular, the cross section of the second inner shielding layer (3) is sector-shaped, and the second inner shielding layers (3) are distributed in an annular array by taking the center of the first inner shielding layer (2) as an array center; control signal cable cores (4) are arranged in the first inner shielding layer (2) and the second inner shielding layer (3); a filling layer (5) is arranged at the gap between the control signal cable cores (4); the outside cladding of outer shielding layer (1) has restrictive coating (6).

2. The fire-resistant double-layer shielded control cable of claim 1, wherein: and a flame-retardant fire-resistant layer (7) is also arranged between the outer shielding layer (1) and the sheath layer (6).

3. The fire-resistant double-layer shielded control cable of claim 1, wherein: 3-6 second inner shielding layers (3) are arranged.

4. The fire-resistant double-layer shielded control cable according to any one of claims 1 to 3, wherein: the first inner shielding layer (2) and the second inner shielding layer (3) are both a corrugated copper pipe or a corrugated aluminum pipe; the outer shielding layer (1) is made of a magnetic alloy material.

5. The fire-resistant double-layer shielded control cable of claim 1, wherein: and a filling rope (8) is arranged at a gap between the second inner shielding layers (3).