CN203536059U - Self-temperature-measurement aluminum alloy lead cable - Google Patents

Abstract

The utility model relates to a self-temperature-measurement aluminum alloy lead cable which comprises a sheath made of a metal tube and a cable core positioned in the sheath. The sheath is corrugated aluminum alloy pipe. The cable core includes a mica tape insulating layer and multiple mutually twisted wire cores and an alkali-free glass filler which are disposed inside the mica tape insulating layer. Each wire core is composed of a conductor formed by twisting aluminum alloy wires and an insulating layer lapping the outside of the conductor, wherein an aluminum alloy wire braided shielding layer is arranged between the conductor and the insulating layer. An aluminum alloy wire covering layer is arranged between the cable core and the sheath. An optical unit is disposed in the alkali-free glass filler. 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 aluminum alloy lead cable helps to save the relatively scarce copper resource, has good bending, insulating and shielding performance, and can not only perform communication, but also monitor the temperature of the cable in real time.

Description

From thermometric aluminium alloy conductor cable

Technical field

The utility model belongs to field of cables, specifically a kind of from thermometric aluminium alloy conductor cable.

Background technology

Be widely used at present cable that the industries such as generator, oil, chemical industry, metallurgy high temperature place and sewage disposal are used and be all being formed by cable core and the sheath that is wrapped in outside cable core, this fireproofing of cable and shielding properties are poor, and due to the reason on manufacturing, the length that is also subject to being made by metal tube limits, cable cannot be accomplished any length needing, and is therefore difficult to meet user's user demand.

And current cable, adopts copper as conductor more.And the reserves of copper are limited, price is very high, and China is a country that bauxite resource is abundant, according to the parties concerned, announces, and aluminium ore reserves are 3,000,000,000 tons, account for 12% of world's total amount.

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

Technical problem to be solved in the utility model is the above-mentioned defect that overcomes prior art, provides a kind of from thermometric aluminium alloy conductor cable.

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

A kind of from thermometric aluminium alloy conductor cable, it is characterized in that, comprise the sheath of being made by metal tube and the cable core that is positioned at sheath inside, described sheath is corrugated aluminium compo pipe, described cable core comprises mica tape insulating barrier and inner several stranded core and alkali-free glass fillers mutually thereof, described core is by the stranded conductor forming of aluminium alloy wire and wrappedly at its outside insulating barrier, form, between described conductor and insulating barrier, be provided with one deck aluminum-alloy wire woven shield, between described cable core and sheath, be provided with one deck aluminum-alloy wire integument; In described alkali-free glass filler, be provided with a light unit, 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.

The beneficial effects of the utility model are:

Adopt aluminium substitution copper, greatly saved more rare copper resource relatively.

In the utility model, conductor is many aluminium alloy wires, and sheath is corrugated aluminium compo pipe, is all soft structure, makes cable have good bending property, easy to use and can manufacture very longly, does not meet the needs of different length; Corrugated aluminium compo pipe can not burn in pure oxygen yet, only can be fire-retardant, in general fire, can not melt or emit pernicious gas, mica is very excellent insulating material, coordinate again alkali-free glass filler, can meet cable completely and the in the situation that of flame calcination, continue the insulation property that keep good, thereby realize in the calcination of cable in flame, can also keep its performance; Aluminum-alloy wire woven shield and aluminum-alloy wire integument both can guarantee its shielding properties, can eliminate again the generation of eddy current.

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

As shown in Figure 1, a kind of from thermometric aluminium alloy conductor cable, comprise the sheath 1 of being made by metal tube and the cable core that is positioned at sheath 1 inside, described sheath 1 is corrugated aluminium compo pipe, described cable core comprises mica tape insulating barrier 2 and inner three mutual stranded cores and alkali-free glass filler 4, described core is by the stranded conductor forming 3 of aluminium alloy wire and wrappedly at its outside insulating barrier 6, form, 6 of described conductor 3 and insulating barriers are provided with one deck aluminum-alloy wire woven shield 7, and 1 of described cable core and sheath are provided with one deck aluminum-alloy wire integument 8.In the utility model, conductor 3 is many aluminium alloy wires, and sheath 1 is corrugated aluminium compo pipe, is all soft structure, makes cable have good bending property, easy to use and can manufacture very longly, does not meet the needs of different length; Corrugated aluminium compo pipe can not burn in pure oxygen yet, only can be fire-retardant, in general fire, can not melt or emit pernicious gas, mica is very excellent insulating material, coordinate again alkali-free glass filler 4, can meet cable completely and the in the situation that of flame calcination, continue the insulation property that keep good, thereby realize in the calcination of cable in flame, can also keep its performance; Aluminum-alloy wire woven shield 7 and aluminum-alloy wire integument 8 both can guarantee its shielding properties, can eliminate again the generation of eddy current.

In described alkali-free glass filler 4, be provided with a light unit 5, 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 aluminium alloy conductor cable, it is characterized in that, comprise the sheath of being made by metal tube and the cable core that is positioned at sheath inside, described sheath is corrugated aluminium compo pipe, described cable core comprises mica tape insulating barrier and inner several stranded core and alkali-free glass fillers mutually thereof, described core is by the stranded conductor forming of aluminium alloy wire and wrappedly at its outside insulating barrier, form, between described conductor and insulating barrier, be provided with one deck aluminum-alloy wire woven shield, between described cable core and sheath, be provided with one deck aluminum-alloy wire integument; In described alkali-free glass filler, be provided with a light unit, 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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