CN2775695Y

CN2775695Y - Specific optical cable for laying in shallow sea

Info

Publication number: CN2775695Y
Application number: CN 200520040279
Authority: CN
Inventors: 张伟强; 吴志平; 郑志清
Original assignee: Jiangsu Hengtong Optic Electric Co Ltd
Current assignee: Hengtong Optic Electric Co Ltd
Priority date: 2005-03-18
Filing date: 2005-03-18
Publication date: 2006-04-26
Anticipated expiration: 2015-03-18

Abstract

A specific optical cable for laying in the shallow sea comprises cable cores and an outer sheath. The cable core is provided with a center strengthener, an optical fiber and a casing tube in it, and an inner sheath, a middle sheath and a double steel wire armoured layer are arranged between the cable core and the outer sheath. The specific optical cable for laying in the shallow sea has the advantages of large number of cores, corrosion resistance, high mechanical degree and long service life, and it is adapted for laying down in the shallow sea. The moisture permeability coefficient obtain zero.

Description

Be used for the special optical cable that the shallow sea is laid

Technical field

The utility model belongs to a kind of communications optical cable, especially the special optical cable that lays in the shallow sea.

Background technology

Have the optical cable that lays now and generally adopt the central tubular structure in the shallow sea, with the protecting component of metal sleeve as optical fiber, the optical cable of this central tubular structure is difficult to the core number is done greatly at present, influences the raising of communication capacity; The moisture vapor transmission coefficient that can not guarantee optical cable in seawater reaches zero, influences serviceable life.

Summary of the invention

In order to overcome the deficiency that the optical cable that lays in existing shallow sea exists, the special optical cable that the utility model provides a kind of new shallow sea to lay, it has, and the core number is big, the moisture vapor transmission coefficient reaches zero, corrosion-resistant, physical strength is high, the advantage of long service life.

The utility model provides is used for the special optical cable that the shallow sea is laid, comprise cable core (4) and oversheath (12), be provided with central reinforce member (11), optical fiber (2) and sleeve pipe (1) thereof in the cable core (4), between cable core (4) and oversheath (12), set gradually inner sheath (6), metal tube sealant (7), middle sheath (8), wire armoring layer (9).

In order to increase the physical strength of optical cable, wire armoring layer of the present utility model (9) is double-decker and closely is arranged in middle sheath (8) on every side, and interlayer (10) is set between double-layer wire.

The beneficial effects of the utility model are that the core number in the cable core can be done greatly, and cable core is provided with the metal tube sealant outward makes the moisture vapor transmission coefficient reach zero, corrosion-resistant, adopts the double wire armor layer to increase physical strength, increases the service life.

Description of drawings

Fig. 1 is a cross sectional representation of the present utility model.

In Fig. 1,1. optical fiber loose tube, 2. optical fiber, 3. sleeve pipe filling material, 4. cable core, 5. cable core filling material, 6. inner sheath, 7. metal tube sealant, 8. in sheath, 9. wire armoring layer, 10. interlayer, 11. central reinforce members, 12. oversheaths.

Embodiment

With metal center reinforcement (11) be arranged on around the stranded cable core (4) of making of loose tube fiber, coat tygon inner sheath (6) then successively, sheath (8) in aluminum pipe sealant (7) that argon arc welding is made, tygon, make the double armor layer with the high-strength alloy coating wire again, and tygon interlayer (10) is set between the steel wire of double armor layer, in the gap of wire armoring layer (9), reach the filling-modified pitch in outside of steel wire, outside the wire armoring layer, coat tygon oversheath (12) at last.

Claims

1, a kind ofly is used for the special optical cable that the shallow sea is laid, comprise cable core and oversheath, be provided with central reinforce member, optical fiber and sleeve pipe thereof in the cable core, it is characterized in that between cable core and oversheath, setting gradually inner sheath, metal tube sealant, middle sheath, wire armoring layer.

2, be used for the special optical cable that the shallow sea is laid by claim 1 is described, it is characterized in that the wire armoring layer be double-decker closely be arranged in around the sheath, interlayer is set between double-layer wire.