CN215833662U

CN215833662U - Silicon core pipe for ultrahigh pressure resistance of optical fiber cable

Info

Publication number: CN215833662U
Application number: CN202121667471.XU
Authority: CN
Inventors: 王长柱; 薛景伟
Original assignee: Shandong Northwest Expressway Maintenance Technology Co ltd
Current assignee: Shandong Northwest Expressway Maintenance Technology Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-02-15
Anticipated expiration: 2031-07-21

Abstract

The utility model relates to a silicon core pipe with ultrahigh pressure resistance, which comprises a basic section bar and a reinforcing section bar, wherein a pipe body is formed by extruding and compounding the basic section bar, the reinforcing section bar is extruded in the same way, perfectly compounded from head to tail and compounded in an intermediate layer of the pipe body. The basic section is formed by a polyethylene multilayer structure, and a basic strip is extruded and molded; the reinforcing section bar has the characteristic of continuous production, and is parallel to the inner layer and the outer layer of the pipe body. The utility model has the technical effects that: the reinforcing section bars and the basic section bars are tightly coated together, so that the potential cracking risk is avoided. Meanwhile, the material can be greatly saved, the production cost is reduced, the weight of the product is reduced, and the pressure grade of the blowing cable is improved.

Description

Silicon core pipe for ultrahigh pressure resistance of optical fiber cable

Technical Field

The utility model relates to a pipeline for protection, in particular to an ultrahigh-pressure silicon core pipe for an optical fiber cable.

Background

In the prior art, a silicon core tube (also called a cable protection tube) for an optical fiber cable has the characteristics of insulation, sealing property, waterproofness and low friction coefficient. In the construction of cable laying, usually, ditching is firstly carried out to bury the cable protection pipe, then soil is backfilled, and then the cable is blown into the cable protection pipe by high-pressure airflow, and due to the low friction coefficient of the wall of the silicon core pipe, the cable can be more easily inserted into a pipeline. In the prior art, the higher the air blowing pressure borne by the silicon core pipe is, the longer the distance of the air blowing cable is. In the prior art, the air-blowing cable laying technology is still incomplete, the high pressure resistance of the cable protection pipe is not high, the cable protection pipe needs to be excavated again after being laid for a distance of hundreds of meters, and the re-blowing is carried out more than once, so that the construction difficulty is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model solves the technical problem of how to improve the pressure resistance of the silicon core tube.

The technical scheme of the utility model is as follows: a silicon core pipe for an optical fiber cable with ultrahigh pressure resistance is characterized in that: comprises a silicon core layer 1, an inner polyethylene layer 2, a glass fiber layer 3, an outer polyethylene layer 4 and an identification line 5; silicon core layer 1, interior polyethylene layer 2, glass fiber layer 3 and outer polyethylene layer 4 are arranged from inside to outside, still be equipped with the marking line on outer polyethylene layer 4.

The utility model has the technical effects that: the pressure resistance is increased due to the addition of the glass fiber layer 3 between the inner polyethylene layer 2 and the outer polyethylene layer 4.

Drawings

FIG. 1: is a sectional view of an ultrahigh pressure-resistant silicon core pipe of an optical fiber cable;

FIG. 2: is a sectional view of an ultrahigh pressure-resistant silicon core pipe of an optical fiber cable;

Detailed Description

The utility model is described in further detail below with reference to the figures and specific embodiments.

A silicon core tube for ultra-high pressure resistance of fiber optic cable, as shown in fig. 1-2. The structure of the polyethylene core comprises a silicon core layer 1, an inner polyethylene layer 2, a glass fiber layer 3 and an outer polyethylene layer 4; the silicon core layer 1, the inner polyethylene layer 2, the glass fiber layer 3 and the outer polyethylene layer 4 are arranged from inside to outside. The inner polyethylene layer 2 is a basic layer and has the advantages of strong toughness, high pressure (voltage) resistance, aging resistance, pressure resistance, impact resistance, fire resistance and flame retardance. The glass fiber layer 3 is used to enhance the resistance to pressure, which is the internal pressure generated during the operation of the blown fiber cable. The outer polyethylene layer 4 is a protective layer, and the purpose of using polyethylene is to reduce the hot melting cost of coating the silicon core pipe in the processing process. Still be equipped with the sign line on the outer polyethylene layer 4, the sign line prevents for the heat that the pipeline from in laying process, producing the distortion. In the construction, if the distortion is generated, the construction worker can easily see the distortion.

Claims

1. A silicon core pipe for an optical fiber cable with ultrahigh pressure resistance is characterized in that: comprises a silicon core layer (1), an inner polyethylene layer (2), a glass fiber layer (3), an outer polyethylene layer (4) and a marking line (5); the silicon core layer (1), the inner polyethylene layer (2), the glass fiber layer (3) and the outer polyethylene layer (4) are arranged from inside to outside, and the outer polyethylene layer (4) is further provided with identification lines (5).