CN2331978Y

CN2331978Y - Outer intensified centre tube-type all-medium self-carry communication optical cable

Info

Publication number: CN2331978Y
Application number: CN 98232858
Authority: CN
Inventors: 倪厚森; 王强
Original assignee: XI'AN ELECTRIC CABLE FACTORY
Current assignee: XI'AN ELECTRIC CABLE FACTORY
Priority date: 1998-07-09
Filing date: 1998-07-09
Publication date: 1999-08-04
Anticipated expiration: 2008-07-09

Abstract

The utility model relates to an optical cable for communication, particularly an outer intensified centre tube-type all-medium self-carry communication optical cable, mainly solving the disadvantages of large weight, unable self-carry type overhead, not anti-lightning stroke, not anti-mice biting, not anti-termite harming, small length of optical cables, etc. of the reached technology. The utility model comprises a loose casing tube, optical fiber in the loose casing tube and fiber paste filled in the loose casing tube. A fiber intensified plastic tube is arranged outside the loose casing tube and tightly bonded with the loose casing tube. The fiber intensified plastic tube is coated or covered with a water-resisting layer outside. The water-resisting layer is squeezed with an outer sheath. The utility model can be used for communication transmission network.

Description

Add strong center tubular type all-dielectric, self-supporting communications optical cable

The utility model relates to a kind of optical cable that is used to communicate by letter, and is a kind of strong center tubular type all-dielectric, self-supporting communications optical cable that adds specifically.

At present, communications optical cable in the world structurally is mainly loose cable structure, and in loose cable structure based on stranded formula optical cable and central tubular optical cable.In the prior art, the central tubular optical cable structurally generally is the primary coating fibre that apparatus has colour code to differentiate, converging into fibre bundle enters in the loose sleeve pipe, and the pipe in the filling fine cream, evenly strand system steel wire is as reinforcement outside loose sleeve pipe then, and wrapped band is with fixing cable core structure, the wrapped then zone of swelling that blocks water outside the steel wire reinforcement, vertical again alclad plastic composite strip extrudes the plastics oversheath at last.But this optical cable finds to exist following shortcoming after using: 1. can not self-bearing type built on stilts, and must hang with cable wire and hang, so both increased laid down cost, again because of its deadweight, windage are very big, thereby can not large span is built on stilts lay; 2. can expose steel wire after the damaged by rats and corroded; 3. not lightning protection, during thunderbolt, big electric current can make the metal reinforcement heating and disconnected fibre; 4. not termite-proof; 5. after optical cable is subjected to gunslinging, steel wire will expose and be corroded; 6. because of using aluminium-plastic tape and tinsel, make cable length less, both increased the joint expense, cause again because of by continuing the additional attenuation that produces.

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art and big, the anti-thunder and lightning of a kind of in light weight, tensile strength, mouse bite preventing, termite-proof, anti-gunshot is provided, and greatly produced in lengths add strong center tubular type all-dielectric, self-supporting communications optical cable.

For finishing above-mentioned purpose, technical solution provided by the utility model is: a kind of strong center tubular type all-dielectric, self-supporting communications optical cable that adds, comprise: oversheath 6, loose sleeve pipe 3, the optical fiber 1 in loose sleeve pipe 3 and be filled in optical fiber 1 and loose sleeve pipe 3 between fine cream 2, its special character is, the fiber of combining closely with it is set outside the described loose sleeve pipe 3 strengthens north material pipe 4, at this fiber reinforced plastics pipe 4 outsides coating or coating water blocking layer 5, outside this water blocking layer 5, extruded described oversheath 6.

Fiber reinforced plastics pipe 4 in the above-mentioned technical solution can be made by organdy, aramid fiber and other macromolecular fibre reinforced plastics; its role is to provides the mechanical damage protection for the cable heart; can protect cable core not deposited to install and use in the tension force that takes place and the infringement of wall pressure, and have radially function with the total cross-section waterproof.

Water blocking layer 5 described in the above-mentioned technical solution can adopt various material water-proof materials such as thermosol, waterstop, water-proofing powder, its role is to protection against the tide, plays resistance effect between fiber reinforced plastics pipe 4 and oversheath 6.

Accompanying drawing is the structural representation of a preferred embodiment of the utility model.

Referring to accompanying drawing, this adds strong center tubular type all-dielectric, self-supporting communications optical cable and has a loose sleeve pipe 3,6 optical fiber 1 are positioned at loose sleeve pipe 3, filling fine cream 2 in loose sleeve pipe 3 is thixotropy optical fiber ointment, an organdy fiber reinforced plastics pipe 4 of combining closely with it is set outside loose sleeve pipe 3, side coating one deck thermosol water blocking layer 5 extrudes a plastics oversheath 6 again outside water blocking layer 5 outside this fiber reinforced plastics pipe 4.

Optical cable described in the utility model can be widely used in the communication transmission network, both can be used as self-supporting and has maked somebody a mere figurehead, and also can be used for occasions such as cloth pipe laying road.

In conjunction with the foregoing description as can be seen, the utility model has following advantage compared to existing technology:

1, in light weight because of it, volume is little, tensile strength is big, and is thereby can self-bearing type built on stilts, need not use cable wire to hang, and saved laid down cost, reduced the influence of sleet and windage, can carry out that large span is built on stilts lays;

2, use metal material to be nonconductive optical fiber cable because of whole optical cable end, can be anti-lightning strike;

3, because of not using metallic aluminium plastic composite strip and steel wire, optical cable is produced in lengths greatly, not only can save the joint expense, also can reduce the additional attenuation that optical cable brings because of continuing;

4, mouse bite preventing, anti-gunshot, be not afraid of the termite infringement:

5, its production technology is simple, production cost is lower.

Claims

1, a kind of strong center tubular type all-dielectric, self-supporting optical cable that adds, comprise: oversheath (6), loose sleeve pipe (3), be positioned at the optical fiber (1) of loose sleeve pipe (3) and be filled in optical fiber (1) and loose sleeve pipe (3) between fine cream (2), it is characterized in that: the fiber reinforced plastics pipe (4) of combining closely with it is set outside the described loose sleeve pipe (3), at this fiber reinforced plastics pipe (4) outside coating or coating water blocking layer (5), outside water blocking layer (5), extruded described oversheath (6).

2, the strong center tubular type all-dielectric, self-supporting optical cable that adds according to claim 1, it is characterized in that: described fiber reinforced plastics pipe (4) is an organdy fiber reinforced plastics pipe.

3, the strong center tubular type all-dielectric, self-supporting optical cable that adds according to claim 1 and 2, it is characterized in that: described water blocking layer (5) is the thermosol water blocking layer.