CN202631821U

CN202631821U - Novel water-blocking optical cable

Info

Publication number: CN202631821U
Application number: CN 201220327455
Authority: CN
Inventors: 张德格
Original assignee: Wuhan Yutong Optical Fiber & Cable Co Ltd
Current assignee: Wuhan Yutong Optical Fiber & Cable Co Ltd
Priority date: 2012-07-09
Filing date: 2012-07-09
Publication date: 2012-12-26
Anticipated expiration: 2022-07-09

Abstract

The utility model provides a novel water-blocking optical cable, which is excellent in water-blocking effect and low in cost. The water-blocking optical cable comprises a first sheath layer wrapping the exterior of a cable core, and a second sheath layer located outside the first sheath layer, wherein a corrugated steel belt is arranged between the first sheath layer and the second sheath layer, a first water-blocking yarn is placed on the external surface of the first sheath layer in parallel along the length direction, and a second water-blocking yarn is spirally coiled on the external surfaces of the first sheath layer and the first water-blocking yarn. According to the novel water-blocking optical cable provided by the utility model, when the cross section of the optical cable meets water, the water-blocking yarns expand quickly to block water so as to realize a better water-blocking effect; and the material cost of the water-blocking yarns is 1/5 of that of a water-blocking belt, so that the novel water-blocking optical cable is excellent in water-blocking effect and low in cost.

Description

A kind of novel water blocking optical cable

Technical field

The utility model relates to a kind of optical cable, especially a kind of novel water blocking optical cable.

Background technology

Optical cable must guarantee that total cross-section blocks water in environment for use.Because cable core extruded the first very thin restrictive coating of one deck when one protects, and two prick the comparison difficulty that blocks water between line steel band and first restrictive coating when protecting, and common way is to wrap one deck waterstop pricking to indulge between line steel band and first restrictive coating.But this waterstop block-water effect is poor, and cost is high.

The utility model content

The purpose of the utility model provides the novel water blocking optical cable that a kind of block-water effect is good, cost is low.

Realize the novel water blocking optical cable of the utility model purpose; Comprise and wrap in the first outside restrictive coating of cable core and be positioned at the second outside restrictive coating of first restrictive coating; Be provided with between said first restrictive coating and second restrictive coating and prick the line steel band; First water blocking yarn of the parallel along its length placement of the outside surface of said first restrictive coating, the outside surface spiral of said first restrictive coating and first water blocking yarn twines second water blocking yarn.

The beneficial effect of the novel water blocking optical cable of the utility model is following: the novel water blocking optical cable of the utility model; When water is met in certain optical cable cross section; The water blocking yarn water shutoff of expanding rapidly; Reach good block-water effect, and the water blocking yarn material cost has only 1/5th of waterstop, so block-water effect is good, cost is low.

Description of drawings

Fig. 1 is the structural representation of the novel water blocking optical cable of the utility model.

Embodiment

The embodiment of the utility model is following: as shown in Figure 1; The novel water blocking optical cable of the utility model; Comprise wrapping in the first outside restrictive coating 1 of cable core, be positioned at second restrictive coating 2 of first restrictive coating, 1 outside, be provided with between said first restrictive coating 1 and second restrictive coating 2 and prick line steel band 3; First water blocking yarn 4 of the parallel along its length placement of the outside surface of said first restrictive coating 1, the outside surface spiral of said first restrictive coating 1 and first water blocking yarn 4 twines second water blocking yarn 5.

The novel water blocking optical cable of the utility model, when water was met in certain optical cable cross section, the water blocking yarn water shutoff of expanding rapidly reach good block-water effect, and the water blocking yarn material cost has only 1/5th of waterstop, so block-water effect was good, cost is low.

Embodiment recited above describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Design under the spiritual prerequisite not breaking away from the utility model; Various distortion and improvement that the common engineering technical personnel in this area make the utility model technical scheme all should fall in the protection domain that claims of the utility model confirm.

Claims

1. novel water blocking optical cable; It is characterized in that; Comprise: wrap in the first outside restrictive coating of cable core and be positioned at the second outside restrictive coating of first restrictive coating; Be provided with between said first restrictive coating and second restrictive coating and prick the line steel band, first water blocking yarn of the parallel along its length placement of the outside surface of said first restrictive coating, the outside surface spiral of said first restrictive coating and first water blocking yarn twines second water blocking yarn.