CN205880303U - Single tube PBT manages composite fiber -optic overhead ground wi - Google Patents

Abstract

The utility model discloses a single tube PBT manages composite fiber -optic overhead ground wi, it includes that a light unit, direct parcel are in insulating layer, the parcel on light unit surface are in the aluminum pipe and the transposition on insulating layer surface are in aluminum tube surface's outer transposition layer, the light unit includes a PBT pipe, accepts PBT a plurality of intraductal optic fibre, the quantity of optic fibre is 24~48 cores. The utility model discloses optic fibre quantity saturation increases, and reduced whole OPGW's cable footpath, improved that the arc hangs down, the anti -wind is pressed and anti icing performance, and reduced operation, reduced manufacturing cost.

Description

Single hose PBT pipe OPGW

[technical field]

This utility model belongs to OPGW manufacturing technology field, particularly relates to a kind of single hose PBT pipe OPGW.

[background technology]

OPGW (be called for short OPGW) has ground wire and communications optical cable dual-use function concurrently, has good technical Energy and economic benefit, obtained universal application in global power system at present.Optical fiber makes somebody a mere figurehead composite ground wire as having The ground wire of optical fiber communication function, in China's application history of existing more than 30 year.OPGW various structures, mainly have rustless steel tubular type and Aluminium tube type.And aluminium tube type is divided into stainless steel tube clad aluminum tubular type and PBT pipe clad aluminum tubular type.PBT aluminium tube type structure is except possessing Outside the advantage of stainless steel tube clad aluminum tubular type OPGW optical cable, it is provided simultaneously with advantages below: 1, optical fiber has PBT sheath to protect in aluminum pipe Protecting, good heat-insulation effect, the protection to optical fiber is more perfect；2, PBT is with low cost, and PBT clad aluminum tubular type OPGW more price is excellent Gesture；3, short circuit current is little on the impact of optical fiber.

But our PBT aluminium pipe structure is mostly 3～8 stranded rear the most existing skills of compound aluminum tube structure of PBT single tube at present Disclosed in art Patent Application No. 201320824509.9, a kind of large core number PBT pipe OPGW structure, asks for an interview Fig. 2 in Figure of description, it include center reinforcement 6 and be stranded in center reinforcement (6) outward by multiple PBT light unit (7) the interior twisted wire layer formed, the thermal insulation layer (8) being coated on outside interior twisted wire layer, it is maximum that PBT light unit (7) can accommodate number of fibers Being 12 cores, conventional 24～48 cores are accomplished by managing stranded forming with 3～4 PBT, and this just makes light unit wires footpath become big, limits afterwards The line footpath of OPGW optical cable, relatively adds operation, improves cost.

Therefore, it is necessary to provide a kind of new single hose PBT pipe OPGW to solve the problems referred to above.

[utility model content]

Main purpose of the present utility model is to provide a kind of single hose PBT pipe OPGW, number of fibers Saturation increases, and reduces the cable footpath of whole OPGW, and decreases operation sequence, reduces production cost.

This utility model is achieved through the following technical solutions above-mentioned purpose: a kind of single hose PBT pipe optical fiber composite overhead ground Line, it includes a smooth unit, the thermal insulation layer being directly wrapped in described smooth cell surface, is wrapped in the aluminum pipe on described thermal insulation layer surface And it is stranded in the outer stranded layer of described aluminum tube surfaces, if described smooth unit includes a PBT pipe, is housed in described PBT pipe Dry root optical fiber, the quantity of described optical fiber is 24～48 cores.

Further, described thermal insulation layer is Kapton or polyethylene tube.

Further, described outer stranded layer is formed by some metal monofilament are stranded.

Further, described metal monofilament is aluminum-clad steel wire or aluminium alloy wire.

Compared with prior art, the beneficial effect of a kind of single hose of this utility model PBT pipe OPGW exists In: number of fibers saturation increases, and reduces the cable footpath of whole OPGW, and decreases operation sequence, reduces production cost. Concrete,

1) after using Large Diameter Pipeline PBT to be coated with thermal insulation layer again, line footpath is 4.15mm～4.35mm, original OPGW same core number The stranded rear line footpath of PBT stranded tubes be 5.8mm, compared to original OPGW, whole line footpath reduces 2.3mm～2.7mm, cable footpath Reduction can not only improve sag, moreover it is possible to improves Wind-Pressure Resistance and anti-ice cover performance；

2) using PBT pipe as the protective layer of optical fiber, and thermal insulation layer is set at PBT tube-surface, its good heat-insulation effect, thus right The protection of optical fiber is more perfect, and decreases the short circuit current impact on optical fiber, thus better ensures that the communication performance of optical cable；

3) OPGW of original PBT tubular construction by multiple PBT pipe stranded after cladding aluminum pipe form, and this utility model directly by Single PBT manages wrapped thermal insulation layer and forms, and the present embodiment has the advantage that the radical 1. producing PBT pipe reduces by contrast；② Decrease PBT and manage stranded operation；3. owing to reducing cable core, make the usage quantity of outer layer monofilament decrease, therefore save Material cost and production time.

[accompanying drawing explanation]

Fig. 1 is the structural representation of this utility model embodiment；

Fig. 2 is the structural representation of OPGW in prior art；

In figure, numeral represents:

100 single hose PBT pipe OPGWs；

1 optical fiber；2PBT manages；3 thermal insulation layers；4 aluminum pipes；5 outer stranded layers.

[detailed description of the invention]

Embodiment:

Refer to Fig. 1, the present embodiment is single hose PBT pipe OPGW 100, it include some optical fiber 1, The PBT pipe 2 wrapped up by all optical fiber 1, the thermal insulation layer 3 being wrapped in PBT pipe 2 surface, it is wrapped in the aluminum on thermal insulation layer 3 surface Pipe 4 and be stranded in the outer stranded layer 5 on aluminum pipe 4 surface.

PBT pipe 2 can accommodate 24～48 core fibres.Thermal insulation layer 3 can use Kapton or polyethylene tube.The most stranded Layer 5 is formed by some metal monofilament are stranded, and metal monofilament can use aluminum-clad steel wire or aluminium alloy wire.

The effect of heat insulation being placed directly in aluminum pipe or stainless steel tube due to optical fiber is bad, and therefore the present embodiment uses PBT pipe 2 As the protective layer of optical fiber 1, and there is thermal insulation layer 3 in PBT pipe 2 surface configuration.PBT pipe is extruded by PBT plastic.PBT Plastics refer to the class plastics that polybutylene terephthalate (PBT) is constituted by main body, and it has the advantage that

A, mechanical performance: intensity is high, fatigue durability strong, dimensionally stable, creep is the least (the most rarely becomes under hot conditions Change)；

B, heat-resistant aging: enhanced Undterwriter's Laboratory temperature index reaches 120～140 DEG C (outdoor long-term ageing is the most fine)；

C, insulating properties: excellent (moist, high temperature also can keep electric performance stablity, is to manufacture electronics, the ideal of electric parts Material.

Having the beneficial effects that of the present embodiment single hose PBT pipe OPGW 100:

1) after using PBT pipe 2 surface to be coated with thermal insulation layer 3 again, line footpath is 4.15mm～4.35mm, the same core of original OPGW The stranded rear line footpath of PBT stranded tubes of number is 5.8mm, and compared to original OPGW, whole line footpath reduces 2.3mm～2.7mm, cable footpath Reduction can not only improve sag, moreover it is possible to improve Wind-Pressure Resistance and anti-ice cover performance；

2) using PBT pipe 2 as the protective layer of optical fiber 1, and at PBT pipe 2 surface configuration thermal insulation layer 3, its good heat-insulation effect, from And protection to optical fiber is more perfect, and decrease the short circuit current impact on optical fiber, thus better ensure that the communication of optical cable Performance；

3) OPGW of original PBT tubular construction is formed by the stranded rear cladding aluminum pipe of multiple PBT pipe, and the present embodiment is directly by list Root PBT manages wrapped thermal insulation layer and forms, and the present embodiment has the advantage that the radical 1. producing PBT pipe reduces by contrast；2. subtract Lack PBT and manage stranded operation；3. owing to reducing cable core, make the usage quantity of outer layer monofilament decrease, therefore saved material Material cost and production time.

Above-described is only embodiments more of the present utility model.For the person of ordinary skill of the art, On the premise of creating design without departing from this utility model, it is also possible to making some deformation and improvement, these broadly fall into this practicality Novel protection domain.

Claims (4)

1. a single hose PBT pipe OPGW, it is characterised in that: it includes a smooth unit, is directly wrapped in institute Thermal insulation layer, the aluminum pipe being wrapped in described thermal insulation layer surface of stating light cell surface and be stranded in the outer stranded of described aluminum tube surfaces Layer, the some optical fiber that described smooth unit includes a PBT pipe, is housed in described PBT pipe, the quantity of described optical fiber is 24～48 Core.

2. single hose PBT pipe OPGW as claimed in claim 1, it is characterised in that: described thermal insulation layer is poly- Imide membrane or polyethylene tube.

3. single hose PBT pipe OPGW as claimed in claim 1, it is characterised in that: described outer stranded layer by Some metal monofilament are stranded to be formed.

4. single hose PBT pipe OPGW as claimed in claim 3, it is characterised in that: described metal monofilament is Aluminum-clad steel wire or aluminium alloy wire.