CN2165460Y

CN2165460Y - Multicore optic cable with hollow provided air pipe

Info

Publication number: CN2165460Y
Application number: CN 93241618
Authority: CN
Inventors: 高岩
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-21
Filing date: 1993-10-21
Publication date: 1994-05-18
Anticipated expiration: 2003-10-21

Abstract

The utility model relates to a multi-core optical cable with a hollow pre-left air pipe, which aims to provide an optical cable having the advantages of low cost, simple and quick volume expansion and the low construction cost of the volume expansion. The utility model is composed of more than two hollow pre-left pipes, an optical fiber pipe, filling lines, a wrapping belt and a sheath, wherein, the optical fiber pipe is provided with an optical fiber core unit which is composed of 6 to 8 optical fibers, optical fiber filling lines, and an optical fiber sheath. The stuffing lines are arranged in the space between the pre-left air pipe and the optical fiber air pipe; the wrapping belt is bound at the circumference of the hollow pre-left air pipe, the stuffing lines, and the optical fiber air pipe. The sheath is sheathed outside the wrapping belt.

Description

Multicore optic cable with hollow provided air pipe

The utility model belongs to the telecommunications equipment, particularly a kind of multifiber cable with hollow reservation tracheae.

Used optical cable is normally selected the various optical cables that contain varying number optical fiber by the fiber capacity and the reservation fiber capacity sum of current engine request, this optical cable is if reserved capacity is excessive, cause waste, if reserved capacity is too small, when along with science and technology development and social progress, when expanding the capacity of transmission system, often not only because of repeat earth excavation, lay optical cable, erecting optical cables expends a large amount of civil engineering expenses and shop, erecting optical cables expense, and prolongs the dilatation duration.

The purpose of this utility model provides that a kind of cost is low, dilatation is easy, rapid, the dilatation executive cost is cheap has the multifiber cable that hollow is reserved tracheae.

The utility model is made up of two above hollows reservation tracheaes, optical fiber tracheae, interstitial wire, convolution belt and sheaths, is installed with the optical fibre core unit in the optical fiber tracheae, and the optical fibre core unit is made up of 6～8 optical fiber, optical fiber interstitial wire and optical fiber jacket; Interstitial wire places in the space of reserving between tracheae, optical fiber tracheae; The convolution belt wrapping is in the periphery of hollow reservation tracheae, interstitial wire and optical fiber tracheae, and sheath is enclosed within outside the convolution belt.

Form because the utility model is reserved tracheae, optical fiber tracheae, interstitial wire, convolution belt and sheath by two above hollows, be installed with the optical fibre core unit in the optical fiber tracheae, the optical fibre core unit is made up of 6～8 optical fiber, optical fiber interstitial wire and optical fiber jacket; Interstitial wire places in the space of reserving between tracheae, optical fiber tracheae; The convolution belt wrapping is in the periphery of hollow reservation tracheae, interstitial wire and optical fiber tracheae, and sheath is enclosed within outside the convolution belt.When setting up transmission system, only need to lay by configuration of reservations optical fiber tracheae slightly by the capacity of current engine request, all the other are all the optical cable that hollow is reserved tracheae, thereby make initial cost low, in the time will expanding capacity of transmission system, only needing that the optical fibre core unit is blown into hollow reserves in the tracheae, the technology that continues by routine is connected two standard length optical fibre cores with the equipment of continuing, just finish the dilatation construction, and is not only simple, convenient and rapid, and the dilatation expense is cheap, thereby reaches the purpose of this utility model.

Fig. 1 is the utility model embodiment 1 structural representation sectional view (7 heart)

Fig. 3 is the utility model embodiment 1 structural representation sectional view (4 heart)

Fig. 2 is the utility model embodiment 2 structural representation sectional views (7 heart)

Fig. 4 is the utility model embodiment 2 structural representation sectional views (4 heart)

Fig. 5 is an A portion partial enlarged drawing among Fig. 1, Fig. 2, Fig. 3, Fig. 4.

Below in conjunction with accompanying drawing the utility model is further elaborated.

Embodiment 1(is indoor, is layed in pipeline or conduit).

The utility model is reserved tracheae 1, optical fiber tracheae 2, interstitial wire 3, convolution belt 4 and sheath 5 by hollow and is formed, be installed with optical fibre core unit 21 in the optical fiber tracheae 2, optical fibre core unit 21 is made up of 6-8 root optical fiber 211, optical fiber interstitial wire 212, optical fiber inner sheath 213 and optical fiber oversheath 214, the inside and outside sheath 213,214 of optical fiber is a polyethylene foamed, and hollow is reserved tracheae 1 and optical fiber tracheae 2 is the PE plastics; Interstitial wire 3 places hollow to reserve in

tracheae

1,2 spaces of optical fiber tracheae, convolution belt 4 wrappings are reserved tracheae 1, optical fiber tracheae 2 and interstitial wire 3 peripheries in hollow, sheath 5 is the PVC plastics, and it is enclosed within outside the convolution belt 4, and Fig. 1 reserves tracheae 1 for hollow and optical fiber tracheae 2 quantity sums are seven; Fig. 3 reserves tracheae 1 for hollow and optical fiber tracheae 2 quantity sums are 4.

Embodiment 2(outdoor use, direct-burried or built on stilts).

The utility model is reserved tracheae 1, optical fiber tracheae 2, interstitial wire 3, convolution belt 4, steel wire strengthening core 6 and sheath 7 by hollow and is formed, be installed with optical fibre core unit 21 in the optical fiber tracheae 2, optical fibre core unit 21 is made up of 6～8 optical fiber 211, optical fiber interstitial wire 212, optical fiber inner sheath 213 and optical fiber oversheath 214, and the inside and outside sheath 213,214 of optical fiber is that polyethylene foamed, hollow are reserved tracheae 1 and optical fiber tracheae 2 is the PE plastics; Interstitial wire 3 places hollow to reserve in

tracheae

1,2 spaces of optical fiber tracheae, and convolution belt 4 wrappings place the steel wire strengthening core 6 at optical cable center to be galvanized strand wires in the periphery of hollow reservation tracheae 1, optical fiber tracheae 2 and interstitial wire 3; Sheath 7 is formed by from inside to outside being coated on convolution belt 4 outer bonding aluminium inner sheath 71, corrugated steel intermediate sleeve 72 and PE oversheaths 73 successively, corrugated steel intermediate sleeve 72 is butt welding or wrapped formation, hollow reservation tracheae 1, strengthening core 6 and optical fiber tracheae 2 quantity sums are 7 among Fig. 2, and hollow reservation tracheae 1 and optical fiber tracheae 2 sums are 4 among Fig. 4.

Interstitial wire 3, optical fiber interstitial wire 212 are steel lead or plastic cord.

Claims

1, a kind of multifiber cable with hollow reservation tracheae, it is characterized in that it reserves tracheae, optical fiber tracheae, interstitial wire, convolution belt and sheaths by two above hollows and form, be installed with optical fibre core in the optical fiber tracheae, the optical fibre core unit is made up of 6～8 optical fiber, optical fiber interstitial wire and optical fiber jacket; Interstitial wire places in the space of reserving between tracheae, optical fiber tracheae; The convolution belt wrapping is in the periphery of hollow reservation tracheae, interstitial wire and optical fiber tracheae, and sheath is enclosed within outside the convolution belt.

2, the multifiber cable with hollow reservation tracheae according to claim 1 is characterized in that it also has the steel wire strengthening core that places the optical cable center to be made by galvanized strand wires; Sheath is made up of cover, metal intermediate sleeve and PE oversheath in the bonding aluminium that from inside to outside clads successively outside convolution belt.

3, the multifiber cable with hollow reservation tracheae according to claim 1 and 2 is characterized in that it is seven that hollow is reserved tracheae, optical fiber tracheae and strengthening core sum.

4, the multifiber cable with hollow reservation tracheae according to claim 1 and 2 is characterized in that hollow is reserved tracheae and optical fiber tracheae sum is four.