CN105652400A

CN105652400A - Full-dry type access optical cable

Info

Publication number: CN105652400A
Application number: CN201610174965.1A
Authority: CN
Inventors: 刘为; 卢星星; 熊壮
Original assignee: Yangtze Optical Fibre and Cable Co Ltd
Current assignee: Yangtze Optical Fibre and Cable Co Ltd
Priority date: 2016-03-25
Filing date: 2016-03-25
Publication date: 2016-06-08

Abstract

The invention relates to a full-dry type access optical cable which comprises an outer sheath and a sleeve. The full-dry type access optical cable is characterized in that tight tube optical fibers and a water blocking piece are laid in the sleeve, and a nonmetal reinforcing piece is arranged outside the sleeve. The full-dry type access optical cable has the advantages that the structure arrangement is simple and reasonable, the mechanical performance is good, the bending performance is high, and the full-dry type access optical cable can be conveniently laid in a corridor; the full-dry type full-medium structure is adopted, the optical cable without factice can be beneficial to divergence continuation, and construction laying, operation and use of the optical cable are facilitated; the loose tube structure of the tight tube optical fibers is adopted, enough buffer space is provided for the tight tube optical fibers, the performance of the cable is improved, divergent optical fibers are effectively protected, access construction is facilitated, and the FTTH direct-to-home requirement is met.

Description

A kind of dry type access optical cable

Technical field

The present invention relates to a kind of dry type access optical cable be convenient to difference and continue, belong to optical communication transmission technique field.

Background technology

Existing access optical cable mostly adopts separation optical fiber and sleeve structure, and have ointment to fill in sleeve pipe, poor owing to being separated the mechanical property of optical fiber, in addition factice for filling continues to the difference of optical cable and brings inconvenience, and the vibrational power flow of existing access optical cable is also unreasonable, it is unfavorable for that the construction of optical cable is laid and runs use.

Summary of the invention

The dry type access optical cable that technical problem to be solved by this invention is the deficiency existed for above-mentioned prior art and provides a kind of vibrational power flow advantages of simple, is convenient to difference and continues.

The present invention is the technical scheme that the problem of the above-mentioned proposition of solution adopts: include oversheath and sleeve pipe, it is characterised in that being laid with tight unjacketed optical fiber and water-blocking component in sleeve pipe, sleeve pipe is outside equipped with non-metal reinforcement member.

By such scheme, the tight unjacketed optical fiber in described sleeve pipe is 1 ~ 12.

By such scheme, the described water-blocking component in sleeve pipe is water blocking yarn, containing 1 ~ 4 water blocking yarn in described sleeve pipe.

By such scheme, the diameter of described sleeve pipe is 1.2 ~ 6.0mm, and described tight unjacketed optical fiber pine is enclosed within sleeve pipe.

By such scheme, described sleeve pipe is 1, sleeve pipe outer cladding non-metal reinforcement member, non-metal reinforcement member outer cladding oversheath, forms central beam tube type cable configuration.

By such scheme, described sleeve pipe is 3 ~ 6, and described sleeve twisted is combined in center type non-metal reinforcement member periphery, and in stranded sleeve pipe outer cladding or be wound with the band that blocks water, block water band outer cladding oversheath, constituting layer stranded cables structure.

By such scheme, described sleeve pipe is made up of PBT, PP or PC.

By such scheme, described oversheath is made up of PE, LSZH or TPU

The useful effect of the present invention is: 1, vibrational power flow advantages of simple, not only good mechanical property, and bending property is strong, is convenient in corridor and lays; 2, adopting dry type all dielectric structure, optical cable continues because not being convenient to difference containing ointment, and the construction being beneficial to optical cable is laid and runs use; 3, adopt the loose tube structure of tight unjacketed optical fiber, provide enough cushioning pockets to tight unjacketed optical fiber, improve properties of optical fiber cable, not only realize the available protecting to difference optical fiber, be also convenient to access construction, meet the demand that FTTH directly registers one's residence.

Accompanying drawing explanation

Fig. 1 is the radial cutaway view of one embodiment of the invention.

Fig. 2 is the radial cutaway view of another embodiment of the present invention.

Embodiment

Below in conjunction with accompanying drawing, embodiments of the invention are described further.

First embodiment is as shown in Figure 1, for a kind of central beam tube type dry type optical cable, include oversheath 5 and sleeve pipe 3,4 tight unjacketed optical fibers 1 it are laid with in sleeve pipe, and it is placed with the effective water blocking yarn 2 of cover, sleeve pipe outer cladding non-metal reinforcement member 4, non-metal reinforcement member is aramid yarn or glass fibre, non-metal reinforcement member outer cladding oversheath. Described sleeve pipe is PBT sleeve pipe, and sheath is LSZH fire retardant jacket.

2nd embodiment is as shown in Figure 2, for a kind of layer-twisted type dry type optical cable, include 6 sleeve pipes, being laid with 4 tight unjacketed optical fibers 1 in sleeve pipe, and be placed with the effective water blocking yarn 2 of cover, described sleeve twisted is combined in center type non-metal reinforcement member 8 periphery, stiffener is placed with two water blocking yarns 6, in stranded sleeve pipe outer cladding or be wound with the band 7 that blocks water, block water band outer cladding oversheath 5, constituting layer stranded cables structure. Described sleeve pipe is PBT sleeve pipe, and sheath is LSZH fire retardant jacket.

Claims

1. a dry type access optical cable, includes oversheath and sleeve pipe, it is characterised in that being laid with tight unjacketed optical fiber and water-blocking component in sleeve pipe, sleeve pipe is outside equipped with non-metal reinforcement member.

2. by dry type according to claim 1 access optical cable, it is characterised in that the tight unjacketed optical fiber in described sleeve pipe is 1 ~ 12.

3. by the dry type access optical cable described in claim 1 or 2, it is characterised in that the described water-blocking component in sleeve pipe is water blocking yarn, containing 1 ~ 4 water blocking yarn in described sleeve pipe.

4. by the dry type access optical cable described in claim 1 or 2, it is characterised in that the diameter of described sleeve pipe is 1.2 ~ 6.0mm, and described tight unjacketed optical fiber pine is enclosed within sleeve pipe.

5. by dry type according to claim 4 access optical cable, it is characterised in that described sleeve pipe is 1, sleeve pipe outer cladding non-metal reinforcement member, non-metal reinforcement member outer cladding oversheath, forms central beam tube type cable configuration.

6. by dry type according to claim 4 access optical cable, it is characterized in that described sleeve pipe is 3 ~ 6, described sleeve twisted is combined in center type non-metal reinforcement member periphery, in stranded sleeve pipe outer cladding or be wound with the band that blocks water, block water band outer cladding oversheath, constituting layer stranded cables structure.

7. by the dry type access optical cable described in claim 1 or 2, it is characterised in that described sleeve pipe is made up of PBT, PP or PC.

8. by the dry type access optical cable described in claim 1 or 2, it is characterised in that described oversheath is made up of PE, LSZH or TPU.