CN2739650Y

CN2739650Y - 8-shaped self-bearing optical cable for sewage pipeline

Info

Publication number: CN2739650Y
Application number: CN 200420081925
Authority: CN
Inventors: 孙巍; 张明; 王瑛; 陈剑雄; 贾欣; 蔡旦君
Original assignee: Alcatel Lucent Shanghai Bell Co Ltd
Current assignee: Nokia Shanghai Bell Co Ltd
Priority date: 2004-08-18
Filing date: 2004-08-18
Publication date: 2005-11-09
Anticipated expiration: 2014-08-18

Abstract

The utility model relates to a self-bearing optical cable for sewage pipeline. The existing traditional road-excavating method for optical cable laying has a large influence on the destruction of roads and traffic. Progress of a project is slow and cost is high. In spite of the prior art to lay optical cable in sewage pipelines, the defect of long time in installing and laying cannot be ignored. At the same time, the whole construction cost is still very high because of the expensive arrangement of robots. The utility model provides a self-bearing optical cable which comprises a bearing part and an optical cable body. The bearing part and the optical cable body are connected by a connecting part. The optical cable body comprises a casing provided with a plurality of optical fibres, an inner sheath which sheathed outside the casing, a vertical covered water-blocking belt coated on the inner sheath vertically, a vertical covered steel belt coated on the vertical covered water-blocking belt vertically and an outer sheath which sheathed on the vertical covered steel belt.

Description

The 8 font self-support cables that can be used for sewer pipe

Technical field

The utility model relates to a kind of optical cable, relates in particular to self-support cable, and it is applicable in the sewer pipe.

Background technology

Along with the continuous increase of present communication network demand, how more effectively, intensive city terminal user's body to become more and more urgent for providing reliable optical fiber access service.At present city optical fiber also mainly relies on the laying method of excavation road, and this method is to the destruction of road and all very big to the influence of traffic.And project progress is slow, and cost is higher.

Sewer pipe is to improve the most in the world at present and intensive urban pipeline network, provides wide and has utilized the space for building the communication network.Having at present and utilizing the sewer pipe in city is the technology of laying the space, in this technology, optical cable adopts the version of optical fiber overcoat ripple, elder generation's remote-controlled robot is fixed on the sewer inwall at a certain distance with clip when laying, by robot wrinkle stainless steel sleeve pipe is fixed on the pickup groove of clip again, then optical cable is penetrated in the sleeve pipe that has laid.The whole erection and the time of laying are still longer.Simultaneously, because robot device's costliness causes whole construction costs still very high.

The utility model content

Edge this, the purpose of this utility model is to provide a kind of optical cable that has from bearing structure, can avoid traditional non-self-support cable must add the mounting structure of clip every a determining deviation, lays difficulty thereby reduce greatly.

According to above-mentioned purpose of the present utility model, a kind of self-support cable is provided, it is characterized in that, comprise supporting body and optical cable main body, link to each other by connector between described supporting body and the described optical cable main body, described optical cable main body comprises:

Sleeve pipe, described multiply optical fiber is arranged in the described sleeve pipe;

Inner sheath is sheathed on outside the described sleeve pipe;

Vertical bag waterstop is coated on the described inner sheath in mode longitudinally;

Vertical Baogang band is coated on the described vertical bag waterstop in mode longitudinally; And

Oversheath is sheathed on described vertical Baogang and is with.

In above-mentioned self-support cable, described optical fiber is divided in the many sleeve pipes, and described many sleeve pipes are arranged in the described inner sheath, is filled with gasket for packing between described many sleeve pipes.

In above-mentioned self-support cable, be provided with central reinforce member at the middle position of described many sleeve pipes.

In above-mentioned self-support cable, in described sleeve pipe, be filled with ointment.

In above-mentioned self-support cable, described supporting body is the zinc-coated wire twisted wire.

In above-mentioned self-support cable, described vertical Baogang band is the two-sided plastic-coated wrinkle steel band of vertical bag.

In above-mentioned self-support cable, has embossing on the described vertical outer steel band.

In above-mentioned self-support cable, central reinforce member is the phosphatization steel wire.

As mentioned above, because the utility model provides the optical cable that has from bearing structure, its structure adopts 8 font cable body structures, thereby the tension force bearing part of optical cable and light cell mesh are kept apart, under cable body vacant state, fiber unit is subjected to any pulling force longitudinally hardly, for the high quality optical fiber transmission provides assurance.

In addition, because 8 font cable body bottoms need not tension element, this part weight can reduce greatly, supporting body by tensioning 8 font cable body tops, optical cable sag under the vacant state can be able to be controlled in the very little scope, allow optical cable press close to sewer pipe endoporus top more, do not influence the normal drain function of pipeline.And, when laying this class self-support cable, also need not clip to be set every a determining deviation, simplified laying work.

Describe specific embodiment of the utility model in detail below in conjunction with accompanying drawing, above-mentioned and other advantage, feature and effect of the present utility model will be able to better embodiment by following description.

Description of drawings

Fig. 1 is the cable configuration figure of an embodiment of the present utility model;

Fig. 2 is the cable configuration figure of another embodiment of the present utility model.

Embodiment

At first see also shown in Figure 1ly, describe earlier first embodiment of self-support cable of the present utility model.As shown in Figure 1, self-support cable of the present utility model comprises two parts, is connected by connector 3 between supporting body 1 and the optical cable main body 2, supporting body 1 and optical cable main body 2.

Supporting body 1 is a rigidity structure, mainly plays carrying optical cable body weight.It can adopt the zinc-coated wire twisted wire.

The structure of optical cable main body 2 comprises from inside to outside: optical fiber 21, sleeve pipe 22, inner sheath 23, vertical bag waterstop (not shown), vertical Baogang are with 24 and oversheath 25.

The quantity of optical fiber 21 can be selected according to actual needs, adopts the optical fiber of 48 cores usually.After closing up, optical fiber 21 penetrates in the sleeve pipe 22.Sleeve pipe 22 can adopt traditional plastic casing; also can adopt laser bonding stainless steel sleeve pipe; the stainless steel sleeve pipe is with respect to plastic casing; for optical fiber provides better seal protection (is very important) and mechanical protection for the optical cable of long-time running under wet environment; simultaneously; it has more stable physical dimension, can guarantee that the optical fiber optical fiber in optical cable construction and operational process in the optical cable can not be subjected to stress influence.Factice for filling in sleeve pipe 22 in addition.

Inner sheath 23 is sheathed on outside the sleeve pipe 22, and inner sheath 23 can adopt synthetic material making such as tygon.Vertical bag waterstop (not shown) is coated on outside the inner sheath 23, and vertical again Baogang is with 24 at vertical bag waterstop bag.Vertical bag waterstop plays to the cable body provides the effect that vertically blocks water, and the effect that prevents the damaged by rats protection and increase lateral pressure resistant power is mainly played with 24 by vertical Baogang.The connotation of vertical bag is the waterstop of certain width or steel band to be prolonged the cable core length direction put up and wrap, and it is parallel with cable core to put up seam.Vertical job contract skill is a technology well-known in the art, and the technician can both understand its structure implication by this term, therefore, is not described in detail at this.

One at present embodiment changes in the example, and vertical Baogang is with 24 can be two-sided plastic-coated steel band.And before vertical bag, steel band being carried out embossing in advance with steel band, embossing has certain degree of depth, makes that the steel band behind the vertical bag has certain flexible.

Oversheath 25 is sheathed on vertical Baogang and is with outside 24, for optical cable provides outermost protection.Oversheath 25 can adopt synthetic materials such as black high density polyethylene.

The embodiment of Fig. 1 is suitable for the less occasion of fiber number, for example structure of 48 cores.For the more situation of fiber number, for example 192 cores can adopt structure as shown in Figure 2.

As shown in Figure 2, on the whole, its structure is similar to the embodiment of Fig. 1, comprises supporting body 6 and optical cable main body 7.Connect by connector 8 between the two.

The difference of the embodiment of Fig. 2 and the embodiment of Fig. 1 is, comprises in the optical cable main body 7 that many sleeve pipes 72, optical fiber 71 are assigned in each root sleeve pipe 72.Many sleeve pipes 72 close up and place inner sheath 73 together then.When many sleeve pipes 72 close up, between many sleeve pipes, fill some gasket for packings 76, main reinforcement 77 in the middle position of many sleeve pipes is provided with.Central reinforce member 77 adopts phosphatization steel wire lay configuration.

Other structure among Fig. 2 embodiment is identical with Fig. 1, repeats no more.

Claims

1, a kind of 8 font self-support cables that can be used for sewer pipe is characterized in that, comprise supporting body and optical cable main body, link to each other by connector between described supporting body and the described optical cable main body, and described optical cable main body comprises:

Inner sheath is sheathed on outside the described sleeve pipe;

Oversheath is sheathed on described vertical Baogang and is with.

2, the 8 font self-support cables that can be used for sewer pipe as claimed in claim 1 is characterized in that described optical fiber is divided in the many sleeve pipes, and described many sleeve pipes are arranged in the described inner sheath, are filled with gasket for packing between described many sleeve pipes.

3, the 8 font self-support cables that can be used for sewer pipe as claimed in claim 2 is characterized in that, are provided with central reinforce member at the middle position of described many sleeve pipes.

4, as the described 8 font self-support cables that can be used for sewer pipe of one of claim 1 to 3, it is characterized in that, in described sleeve pipe, be filled with ointment.

5, as the described 8 font self-support cables that can be used for sewer pipe of one of claim 1 to 3, it is characterized in that described supporting body is the zinc-coated wire twisted wire.

As the described 8 font self-support cables that can be used for sewer pipe of one of claim 1 to 3, it is characterized in that 6, described vertical Baogang band is the two-sided plastic-coated wrinkle steel band of vertical bag.

7, the 8 font self-support cables that can be used for sewer pipe as claimed in claim 6 is characterized in that having embossing on the described vertical outer steel band.

8, the 8 font self-support cables that can be used for sewer pipe as claimed in claim 3 is characterized in that central reinforce member is the phosphatization steel wire.