CN202583537U

CN202583537U - Loose tube layer stranded optical cable with flame retardant sheath

Info

Publication number: CN202583537U
Application number: CN 201220144348
Authority: CN
Inventors: 陈太锁
Original assignee: Anhui Great Electric Limited-Liability Co Of China
Current assignee: Anhui Great Electric Limited-Liability Co Of China
Priority date: 2012-04-09
Filing date: 2012-04-09
Publication date: 2012-12-05
Anticipated expiration: 2022-04-09

Abstract

The utility model discloses a loose tube layer stranded optical cable with a flame retardant sheath. The optical cable comprises optical fibers. A central portion is provided with a metal reinforcing element which is wrapped by a PE cushion layer. A plurality of optical fibers are arranged around the metal reinforcing element in a circle. The plurality of optical fibers are sleeved with PBT loose tubes. Fiber paste is filled between each optical fiber and each PBT loose tube. All PBT loose tubes are wrapped by a yarn layer. Water blocking cable paste is filled between the yarn layer and the PBT loose tubes. The yarn layer is wrapped by a corrugated steel-plastic composite belt which is wrapped by an PE sheath. The PE sheath is sleeved by a halogen-free flame retardant sheath. The PE sheath is bonded outside the corrugated steel-plastic composite belt. According to the utility model, the halogen-free flame retardant sheath is employed, direct burning of flame can be effectively protected, at the same time, a steel-plastic composite armored structure is added in the outer sheath, stretching resistance and side compression resistance ability is strong, flexibility and bending resistance ability of the cable are excellent, the water blocking cable paste is filled outside the reinforcing element and in a cable core, and moisture proofing and water blocking effects are ensured.

Description

A kind of loose sleeve layer strand type optical cable with fire-retardant overcoat

Technical field:

The utility model relates to field fiber, relates in particular to a kind of loose sleeve layer strand type optical cable with fire-retardant overcoat.

Background technology:

Mostly existing optical cable is that optical fiber is with sleeve pipe outward, and cooperates the structure of oversheath, and its mechanical property is relatively poor; Go wrong easily when growing apart from backguy, cable outer sheath adopts the PE sheath usually, and its pressure-proof and snap-resistent ability is relatively poor; In case dug or bump by mistake, be easy to occur situation such as breakage, fracture by mistake; Simultaneously do not have the ability of fire protection flame retarding, can not set up in the place that disaster hidden-trouble is arranged.Therefore imagination provides a kind of new construction to solve this problem.

The utility model content:

The purpose of the utility model just provides a kind of loose sleeve layer strand type optical cable with fire-retardant overcoat, solves existing optical cable and is mostly that optical fiber is with sleeve pipe outward, and cooperate the structure of oversheath; Its mechanical property is relatively poor; Go wrong easily when growing apart from backguy, cable outer sheath adopts the PE sheath usually, and its pressure-proof and snap-resistent ability is relatively poor; In case dug or bump by mistake, be easy to occur situation such as breakage, fracture by mistake; Do not have simultaneously the ability of fire protection flame retarding, the problem that can not set up in the place that disaster hidden-trouble is arranged.

The technical scheme that the utility model adopts is:

A kind of loose sleeve layer strand type optical cable with fire-retardant overcoat, comprise optical fiber: central part has metal reinforcement, and metal reinforcement is wrapped with the PE bed course; Make a circle in metal reinforcement week and have some optical fiber; Some optical fiber all are set with PBT pine sleeve pipe outward, are filled with fine cream between optical fiber and the PBT pine sleeve pipe, and all PBT pine sleeve pipes are wrapped with the bundle layer; Prick between layer and the PBT pine sleeve pipe and be filled with the cable cream that blocks water; Prick layer and be wrapped with the wrinkle composite steel-plastic belt, the wrinkle composite steel-plastic belt is wrapped with the PE sheath, and the PE sheath is set with the halogen-free flameproof sheath outward.

Said wrinkle composite steel-plastic belt is bonded with the PE sheath outward.

Compared with prior art, the beneficial effect of the utility model is:

The utility model adopts the halogen-free flameproof sheath, can effectively protect flame and directly burn, and in oversheath, increases the composite steel-plastic belt armouring simultaneously, its stretch-proof, and lateral pressure resistant is very capable, and optical cable pliability and counter-bending ability are good; Be full of the cable cream that blocks water outside the reinforcement and in the cable core, guarantee protection against the tide, block-water effect.

Description of drawings:

Accompanying drawing 1 is the utility model structural representation.

Embodiment:

Below in conjunction with accompanying drawing, the utility model is done further explain through embodiment:

A kind of loose sleeve layer strand type optical cable with fire-retardant overcoat, comprise optical fiber: central part has metal reinforcement 1, and metal reinforcement 1 is wrapped with PE bed course 2; Making a circle in 1 week of metal reinforcement has some optical fiber 3, and the some optical fiber 3 outer PBT pine sleeve pipes 4 that all are set with are filled with fine cream 5 between optical fiber 3 and the PBT pine sleeve pipe 4; All PBT pine sleeve pipes 4 are wrapped with pricks layer 6; Prick between layer 6 and PBT pine cover 4 pipes and be filled with the cable cream 7 that blocks water, prick layer 6 and be wrapped with wrinkle composite steel-plastic belt 8, wrinkle composite steel-plastic belt 8 is wrapped with PE sheath 9; The PE sheath 9 outer halogen-free flameproof sheaths 10 that are set with, the wrinkle composite steel-plastic belt 8 outer PE sheaths 9 that are bonded with.

The foregoing description is merely the preferred implementation of the utility model, and in addition, the utility model can also have other implementations.Need to prove that under the prerequisite that does not break away from the utility model design, any conspicuous improvement and modification all should fall within the protection domain of the utility model.

Claims

1. the loose sleeve layer strand type optical cable with fire-retardant overcoat comprises optical fiber, and it is characterized in that: central part has metal reinforcement; Metal reinforcement is wrapped with the PE bed course, makes a circle in metal reinforcement week to have some optical fiber, and some optical fiber all are set with PBT pine sleeve pipe outward; Be filled with fine cream between optical fiber and the PBT pine sleeve pipe; All PBT pine sleeve pipes are wrapped with the bundle layer, prick between layer and the PBT pine sleeve pipe and are filled with the cable cream that blocks water, and prick layer and are wrapped with the wrinkle composite steel-plastic belt; The wrinkle composite steel-plastic belt is wrapped with the PE sheath, and the PE sheath is set with the halogen-free flameproof sheath outward.

2. the loose sleeve layer strand type optical cable with fire-retardant overcoat according to claim 1 is characterized in that: said wrinkle composite steel-plastic belt is bonded with the PE sheath outward.