CN203536015U - Double-sheath cable - Google Patents

Abstract

The utility model relates to a double-sheath cable, which comprises a cable core, a PVC inner sheath and a PE outer sheath, the cable core is wrapped in the PVC inner sheath, and the PVC inner sheath is wrapped in the PVC inner sheath. In the PE outer sheath, a polyester tape is provided between the cable core and the PVC inner sheath, the cable core includes four pairs of twisted pairs and a tearing rope, and the four pairs of twisted pairs are all Consists of two insulated conductors twisted together. The insulated wire includes a polyethylene insulation layer and an inner conductor wrapped in the polyethylene insulation layer. The beneficial effects of the utility model are: by using the PE outer sheath on the outside of the PVC inner sheath, the safety and reliability of the cable during use are effectively improved; the structural design of the cable core effectively improves the performance of the traditional double sheath cable Performance parameters, such as near-end crosstalk, attenuation crosstalk ratio, return loss, etc.; the overall structure design of the double-sheathed cable effectively improves the transmission distance and transmission speed of the cable.

Description

A double sheathed cable

technical field

The utility model relates to a double sheath cable.

Background technique

With the development of the power industry, the safety and reliability requirements of electrical equipment used in subways, nuclear power plants, shopping malls, hospitals, and intelligent buildings are getting higher and higher. Sheathed cables refer to single-core or multi-core wires with a sheath layer. Sheathed ones, especially those with double sheaths, are safer. The near-end crosstalk, attenuation crosstalk ratio, return loss and other performance parameters of the current double-sheathed cables need to be improved; the transmission distance and transmission speed of the cables also need to be improved.

Utility model content

The purpose of this utility model is to provide a double-sheath cable to overcome the above-mentioned shortcomings in the prior art.

The purpose of this utility model is to realize through the following technical solutions:

A double-sheath cable, including a cable core, a PVC (polyvinyl chloride) inner sheath and a PE (polyethylene) outer sheath, the cable core is wrapped in the PVC inner sheath, and the PVC inner sheath The sleeve is wrapped in the PE outer sheath, and a polyester tape is provided between the cable core and the PVC inner sheath. The cable core includes four pairs of twisted pairs and a tearing rope, and the four A twisted pair consists of two insulated conductors twisted together.

Further, the insulated wire includes a polyethylene insulating layer and an inner conductor wrapped in the polyethylene insulating layer.

The beneficial effects of the utility model are: by using the PE outer sheath outside the PVC inner sheath, the safety and reliability of the cable during use are effectively improved; the structural design of the cable core effectively improves the performance of the traditional double-sheath cable. Performance parameters, such as near-end crosstalk, attenuation crosstalk ratio, return loss, etc.; the overall structure design of the double-sheathed cable effectively improves the transmission distance and transmission speed of the cable.

Description of drawings

Below according to accompanying drawing, the utility model is described in further detail.

Fig. 1 is a schematic structural diagram of a double-sheathed cable according to an embodiment of the present invention.

In the picture:

1. PE outer sheath; 2. PVC inner sheath; 3. Polyester tape; 4. Rip rope; 5. Insulated wire; 6. Polyethylene insulation layer; 7. Inner conductor; 8. Twisted pair.

Detailed ways

As shown in Figure 1, a kind of double-sheath cable described in the embodiment of the present invention includes a cable core, a PVC inner sheath 2 and a PE outer sheath 1, and the cable core is coated on the PVC inner sheath 2, the PVC inner sheath 2 is covered in the PE outer sheath 1, a polyester tape 3 is provided between the cable core and the PVC inner sheath 2, and the cable core includes four pairs of Twisted pairs 8 and a tearing rope 4, each of the four twisted pairs 8 includes two insulated wires 5 twisted with each other. The insulated wire 5 includes a polyethylene insulating layer 6 and an inner conductor 7 wrapped in the polyethylene insulating layer 6 .

The colors of the four pairs of twisted wires are respectively selected as: white and orange, white and green, white and blue, and white and brown.

The utility model is not limited to the above-mentioned best implementation mode, anyone can draw other various forms of products under the enlightenment of the utility model, but no matter make any changes in its shape or structure, all have the same features as the application Or similar technical schemes all fall within the protection scope of the present utility model.

Claims (2)

1. a double sheathed cable, comprise cable core, PVC inner sheath (2) and PE oversheath (1), described cable core is coated in described PVC inner sheath (2), described PVC inner sheath (2) is coated in described PE oversheath (1), it is characterized in that: between described cable core and described PVC inner sheath (2), be provided with polyester belt (3), described cable core comprises that four pairs of twisted-pair feeders (8) and one tear rope (4), and described four pairs of twisted-pair feeders (8) include two mutual stranded insulated conductors (5).

2. a kind of double sheathed cable according to claim 1, is characterized in that: described insulated conductor (5) comprises polyethylene layer (6) and is wrapped in the inner wire (7) in polyethylene layer (6).

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