CN203536063U - Self-temperature-measurement creep-resistant aluminum alloy lead photoelectric composite cable - Google Patents

Abstract

The utility model relates to a self-temperature-measurement creep-resistant aluminum alloy lead photoelectric composite cable. A wire core is composed of a creep-resistant aluminum alloy conductor and an insulating layer extruded outside the aluminum alloy conductor. More than two wire cores are twisted to form a cable core. An inner lining layer laps the outside of the cable core. An aluminum alloy belt material interlocking armor layer laps the outside of the inner lining layer. An outer sheath layer is extruded outside the aluminum alloy belt material interlocking armor layer. An optical unit is also included. The optical unit includes multiple optical fibers, wherein at least one optical fiber is an optical grating fiber which is provided with a temperature-measurement optical grating in an etched manner. The beneficial effects are that the self-temperature-measurement creep-resistant aluminum alloy lead photoelectric composite cable can well replace a copper conductor cable, can not only perform communication but also monitor the temperature of the cable in real time.

Description

From thermometric creep resistant aluminium alloy conductor photoelectric compound cable

Technical field

The utility model relates to OPLC optical fiber composite low-voltage cable manufacture technology field, specifically a kind of from thermometric creep resistant aluminium alloy conductor photoelectric compound cable.

Background technology

Conventionally the structure that manufactures and designs OPLC optical fiber composite low-voltage cable has non-armored type and armored type two classes.Its conductor adopts electrician's copper, the insulation PVC of employing or XLPE, its armour to adopt steel band, oversheath to adopt PVC more more more more.

The non-armored type OPLC of first kind fiber composite low-voltage composite cable, conductor adopts electrician's copper, its density is 8.89 g/cm3, although copper has good electric property and mechanical performance, but because the density of copper is large, scarcity of resources, it holds at high price, and causes the high cost of cable own, is also that cable laying engineering cost is excessive simultaneously.

Equations of The Second Kind armored type OPLC fiber composite low-voltage composite cable, the double-deck steel band of its armoring material multiselect, has played the effect of anti-mechanical damage to a certain extent.Made up the poor shortcoming of the anti-mechanical damage of the first kind, but because armoring material adopts steel band, its density is 7.8 g/cm3, whole cable weight increases, and has not only increased product cost, has also increased construction cost simultaneously.

In addition, occurred now photoelectric compound cable, had optical fiber communication function and electric power transfer function, can realize the transmission of various control signals, network signal and electric power, adaptation telecommunications network, Broadcasting Cable Network, the Internet, power network are netted the use needs of fusion more.But this photoelectric compound cable temperature rise situation that is in operation cannot be monitored, easily occur to cause the phenomenon of whole cable bad because electrical lead load increase causes to heat up.

Summary of the invention

The purpose of this utility model is a kind of aboundresources, creep resistant aluminium alloy conductor that price is lower of using of development, significantly reduce cables manufacturing cost, significantly alleviate cable weight, increase substantially cable bruise resistance, be applied to build intelligent grid and net more fusion field can from thermometric from thermometric creep resistant aluminium alloy conductor photoelectric compound cable.

The utility model solves the technical scheme that its technical problem adopts:

A kind of from thermometric creep resistant aluminium alloy conductor photoelectric compound cable, it is characterized in that, the core that the insulating barrier being extruded outward by creep resistant aluminium alloy conductor and aluminium alloy conductor forms, by two strands of above cores, be twisted into cable core, wrapping lining-layer outside cable core, outside inner covering, wrapped aluminium alloy strips lock armo layer, extrudes external sheath layer outward at aluminium alloy strips lock armo layer; Between described cable core and described inner covering, filler is set, a light unit is set in described filler, described light unit comprises multifiber and the loose sleeve pipe, non-metal reinforced layer and the sheath that set gradually from inside to outside, described loose casing pipe sleeve is outside described optical fiber, in described loose sleeve pipe, fill full dry type water-blocking material, in described non-metal reinforced layer, be provided with many equally distributed water blocking yarns, between described non-metal reinforced layer and described sheath, be embedded with and tear rope; At least one optical fiber, for inscribing the grating fibers that has thermometric grating, forms a grating point for measuring temperature at interval of predetermined distance on grating fibers, and predetermined distance is 300-500 rice.

Described conductor adopts creep resistant aluminum alloy materials as cable conductor, and its performance meets 8030 requirements in Unite States Standard B800-5, and specific targets are as follows:

1) mechanical performance

Tensile strength (MPa): O state 59-111, H1X or H2X state 103-152, elongation >=10%

2) electric conductivity

20 ℃ of resistivity (Ω mm2/m): mean value≤0.028264, indivedual point≤0.028450,

%IACS: mean value >=61.0, indivedual point >=60.6

Described aluminium alloy strips lock armo, the weight percentages of its aluminium alloy strips is: Si 0.25, and Fe 0.4, and Cu 0.1, Mn 0.1, and Mg 2.2～2.8, and Gr 0.15～0.35, and Zn 0.1, other element is single≤and 0.03, other element summation≤0.15, Al is remainder.

The cable that China's building trade is used is at present mostly traditional cable.As domestic traditional copper-sheathed cable, what substantially adopt is that copper is made the wrapped armouring of conductor steel band, and not only cost is very high, resists extraneous unexpected damage capability also relatively poor, easily punctures, and level of security is low; Larger deadweight makes again installation cost strengthen.

Shortcoming the utility model for fear of common armour has adopted 5000 series alloys band interlocking armourings, reduces Cable Bending Radius, increases substantially the anti-mechanical damage ability of cable, reduces construction cost etc.

The beneficial effects of the utility model are: aluminum alloy conductor cable described in the utility model is simple in structure, selection is good, science, properties of product are good, can replace preferably copper conductor cable, and solve the problems such as electrician's fine aluminium conductor is oxidizable, creep-resistant property is poor.Significantly reduce cables manufacturing cost, significantly alleviate cable weight, increase substantially cable bruise resistance, can be widely used in building intelligent grid and netting fusion field more.

In actual production as use cable of the present utility model, both normal transmission of electric energy, can carry out communication again, can also self carry out temperature survey.So just saved the equipment such as ADSL, OPGW that increase for power communication, also can reduce because the accidents such as the thunderbolt that OPGW causes threaten.Can also save in addition the very expensive GPS wire temperature measuring equipment of use of taking in current work, save huge cost.When the circuit using cable of the present utility model as transferring electric power, staff can directly determine according to described traverse survey the actual bearer situation of circuit to line temperature.

The utility model to strengthening wire on-line monitoring, grasp variations in temperature, improve wire transmission capacity, reduce line loss, improve safe operation of electric network, increase communication backup, solve comprehensive communication plan etc. aspect and all show and provide large economic benefit and social benefit, especially in country instantly, in building controlling the trend of environment-friendly type, economical society, more demonstrate powerful realistic meaning with all strength.

Accompanying drawing explanation

Fig. 1 is cross sectional representation of the present utility model;

Fig. 2 is the cross sectional representation of light unit in the utility model.

Embodiment

A kind of from thermometric creep resistant aluminium alloy conductor photoelectric compound cable, the core being formed by creep resistant aluminium alloy conductor 7 and the outer insulating barrier 4 extruding of aluminium alloy conductor 7, by four strand cores, be twisted into cable core, outside cable core, wrapping lining-layer 3, at the outer wrapped aluminium alloy strips lock armo layer 2 of inner covering 3, outside aluminium alloy strips lock armo layer 2, extrude external sheath layer 1.

Between described cable core and described inner covering 3, filler 8 is set, a light unit 5 is set in described filler 8, described light unit 5 comprises multifiber 51 and the loose sleeve pipe 52 setting gradually from inside to outside, non-metal reinforced layer 53 and sheath 54, pine sleeve pipe 52 is enclosed within outside optical fiber 51, the full dry type water-blocking material 55 of the interior filling of pine sleeve pipe 52, in non-metal reinforced layer 53, be provided with many equally distributed water blocking yarns 56, between non-metal reinforced layer 53 and sheath 54, be embedded with and tear rope 57; At least one optical fiber, for inscribing the grating fibers that has thermometric grating, forms a grating point for measuring temperature at interval of predetermined distance on grating fibers, and predetermined distance is 300-500 rice.

The utility model adopts the method for directly making imprinting grating on optical fiber to carry out the manufacture of thermometric conductor.With the grating fibers that optical fiber imprinting becomes, be the light sensitivity of utilizing fiber optic materials, by special processing mode, make to form space phase grating in fibre core, the local mirror surface that forms an arrowband, forms reflection to the light of specific wavelength.When the temperature of optical fiber changes, the surrounding of grating can change along with expanding with heat and contract with cold of optical fiber, and this changes can change reflection wavelength, by measuring catoptrical wavelength change, just can measure the optical fiber temperature sensor of grating present position.Equally, by measuring catoptrical delay, the position that can learn grating.Here it is utilizes the principle of grating fibers thermometric.

The mode of directly carving grating does not produce supplementary load loss, can not affect measuring distance, and this production method is better than the production method of welding.The grating fibers thermometric mode becoming by optical fiber imprinting is owing to being special optical fiber targetedly, and reflected signal is strong, therefore the transmitting power of equipment and receiving sensitivity are required all lower than Raman, to reflect thermometric mode, and the good stability of equipment.The benefit of simultaneously bringing is far measuring distance, and measuring distance can be more than 100km, and certainty of measurement is in ± 2 ℃.

On at least one optical fiber in these optical fiber, inscribe grating, in the position of setting, inscribe grating, by the temperature sensor of utilizing emitted light signal measurement diverse location grating.Here it is has realized and has utilized grating fibers thermometric.The utility model does not need the continuous temperature of measuring whole piece circuit to distribute, can select every 300～500 meters of measurement points, or strengthen distribution optical grating point in sag minimum point, and select the thermometric mode monitoring circuit variations in temperature of grating fibers, can by the temperature of grasping, adjust defeated biography capacity at any time.Preferably, can select 300 meters, 400 meters, the 500 meters spacing distances as adjacent point for measuring temperature.

According to a specific embodiment of the present utility model, inside, light unit is installed with 24 optical fiber, on 8 optical fiber in these 24 optical fiber, inscribes grating.15 gratings of imprinting all on every in these 8 optical fiber, i.e. totally 15 points for measuring temperature on every.In this embodiment, use 16 optical fiber in 24 optical fiber to carry out communication, utilize 8 imprintings in 24 optical fiber to have the optical fiber of grating to carry out thermometric.Facts have proved, the method can reach good effect.

In actual production as use cable of the present utility model, both normal transmission of electric energy, can carry out communication again, can also self carry out temperature survey.So just saved the equipment such as ADSL, OPGW that increase for power communication, also can reduce because the accidents such as the thunderbolt that OPGW causes threaten.Can also save in addition the very expensive GPS wire temperature measuring equipment of use of taking in current work, save huge cost.When the circuit using cable of the present utility model as transferring electric power, staff can directly determine according to the line temperature measuring the actual bearer situation of circuit.

Claims (1)

1. one kind from thermometric creep resistant aluminium alloy conductor photoelectric compound cable, it is characterized in that, the core that the insulating barrier being extruded outward by creep resistant aluminium alloy conductor and aluminium alloy conductor forms, by two strands of above cores, be twisted into cable core, wrapping lining-layer outside cable core, outside inner covering, wrapped aluminium alloy strips lock armo layer, extrudes external sheath layer outward at aluminium alloy strips lock armo layer; Between described cable core and described inner covering, filler is set, a light unit is set in described filler, described light unit comprises multifiber and the loose sleeve pipe, non-metal reinforced layer and the sheath that set gradually from inside to outside, described loose casing pipe sleeve is outside described optical fiber, in described loose sleeve pipe, fill full dry type water-blocking material, in described non-metal reinforced layer, be provided with many equally distributed water blocking yarns, between described non-metal reinforced layer and described sheath, be embedded with and tear rope; At least one optical fiber, for inscribing the grating fibers that has thermometric grating, forms a grating point for measuring temperature at interval of predetermined distance on grating fibers, and predetermined distance is 300-500 rice.

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