CN104464938A - Self-temperature-measurement flexible insulating carbon fiber leader cable - Google Patents
Self-temperature-measurement flexible insulating carbon fiber leader cable Download PDFInfo
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- CN104464938A CN104464938A CN201310440535.6A CN201310440535A CN104464938A CN 104464938 A CN104464938 A CN 104464938A CN 201310440535 A CN201310440535 A CN 201310440535A CN 104464938 A CN104464938 A CN 104464938A
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Abstract
The invention relates to a self-temperature-measurement flexible insulating carbon fiber leader cable. The cable comprises four conductor wire cores, wherein the four conductor wire cores are sequentially wrapped in a heat insulation lining, a metal sheath and a non-metal sheath, magnesium oxide insulating filler is arranged between the four conductor wire cores and the heat insulation lining, and a carbon fiber composite core is arranged at the center of each conductor wire core and is sequentially wrapped in an insulating layer and a protecting layer. The cable further comprises an optical unit, wherein the optical unit comprises multiple optical fibers, and at least one optical fiber is an optical grating fiber marked with a temperature measurement raster. The cable has the advantages that due to the fact that magnesium oxide minerals serve as the insulating material, insulating property and fireproof property are high; the non-metal sheath on the outmost side is high in corrosion resistance; a seamless copper pipe serves as the metal sheath, and therefore bendability is high; all advantages of a traditional carbon fiber composite core are reserved, strength is higher, electric transmission can be achieved normally, communication can be achieved, and self temperature measurement can be achieved.
Description
Technical field
The present invention relates to electric wire field, particularly relate to one and to test oneself tenderness insulative carbon fiber leader cable.
Background technology
Along with the development of China's economic construction, the continuous growth of electricity needs, cable is also increasing as the demand of the carrier of delivery of electrical energy.But existing cable, such as conventional organic cable (plastic cable), its insulation property existing defects, such as plastic insulating layer easily aging, non-refractory, the easily defect such as hardening; Conventional steel reinforced aluminium conductor, its electric property, wire performance are bad.
In addition, along with the development of China's economic construction, the continuous growth of electricity needs, cable is also increasing as the demand of the carrier of delivery of electrical energy, and mostly current domestic cable conductor is steel reinforced aluminium conductor and aluminium alloy conductors steel, the weight of these wires is larger, resistance is larger, thus cause transmission charges high, and operating temperature is lower, can not adapt to operation under the high temperature conditions, therefore electric power transfer becomes " bottleneck " of electric power industry development, various countries all at research novel overhead power transmission road wire, to replace traditional steel reinforced aluminium conductor.
Carbon fiber composite core wire has the following advantages compared with traditional steel-reinforced aluminum conductor:
(1) lightweight: to be the density of steel be 1/4 for the density of carbon fiber complex core.Therefore, the shaft tower span of aerial cable can increase, and reduces tower bar number and is about about 16%, reduce floor space simultaneously.
(2) intensity is high, and Fracture Force is large.The hot strength of carbon fiber composite core cable is about 2399MPa, is 1.97 times of ordinary steel wire, is 1.17 times of high strength steel.
(3) conductance is high, and ampacity is large.Aluminum steel sectional area in same diameter carbon fiber composite core cable is 1.29 times of conventional steel-core-aluminium strand cable, and ampacity improves about 29%.
(4) line loss is little.Carbon fibre composite is a kind of nonmagnetic substance, when wire is by producing magnetic hysteresis loss and eddy current loss during alternating current, presents less AC resistance.
(5) corrosion-resistant, long service life.Carbon fiber composite core rod avoids the electrochemical corrosion of steel core when being energized between aluminum steel and zinc-coated wire, makes aluminum conductor Long-Time Service and ageing-resistant.
(6) coefficient of linear expansion is little, and sag is little.
But not enough, the wire span made can't be very large for existing carbon fiber complex core intensity.
Finally, existing cable can not realize communication function, also needs separately to establish a communication line to meet communication function, causes and repeats wiring.The temperature rise situation that is in operation cannot be monitored, and easily occurs 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 by this invention is the above-mentioned defect overcoming cable in prior art, provides one to test oneself tenderness insulative carbon fiber leader cable.
The technical solution adopted for the present invention to solve the technical problems is:
One is tested oneself tenderness insulative carbon fiber leader cable, it is characterized in that, comprise four conductor wire cores, be coated with insulation lining, metallic sheath and non metallic sheath successively outward at described four conductor wire cores, be filled with magnesium oxide insulated filler between conductor wire core and insulation lining at described four; Described conductor wire core center is carbon fiber complex core, described carbon fiber complex core comprises carbon fiber wire and glass fiber, layer centered by carbon fiber wire, many glass fibers are stranded in outside described carbon fiber wire, are coated with insulating barrier and protective layer successively outward at described carbon fiber complex core; Also include a light unit, described smooth unit is contained in described magnesium oxide insulated filler; Described light unit comprises multifiber and the Loose tube set gradually from inside to outside, non-metal reinforced layer and protective sleeve, described Loose tube is enclosed within outside described optical fiber, full dry type water-blocking material is filled in described Loose tube, be provided with many equally distributed water blocking yarns in described non-metal reinforced layer, be embedded with between described non-metal reinforced layer and described protective sleeve and tear rope; At least one optical fiber is inscribe the grating fibers having thermometric grating, and grating fibers forms a grating point for measuring temperature at interval of predetermined distance, and predetermined distance is 300-500 rice.
Further, described metallic sheath is seamless copper pipe.
Further, described non metallic sheath is plastic protective layer.
The invention has the beneficial effects as follows: make conductor by the copper of high conductivity, make cable conduction rate of the present invention high; Employing is not burnt, the magnesium oxide of high temperature resistant (2800 DEG C) makes isolation material, and its insulation, fire protecting performance are higher than common rubber or plastic insulating layer; At the non metallic sheath of ragged edge, i.e. plastics outer jacket, has good Anticorrosive Character; Adopt seamless copper pipe to make metallic sheath, have good bendability and flexibility; There is all advantages of traditional carbon fibres composite core, but intensity is larger, can be used for the area that the condition such as Great span, severely afflicated area is more severe, have broad application prospects after making wire; In addition, this cable not only can conduct electricity, and can also realize optical fiber communication.
As used cable of the present invention in actual production, both can normal transmission of electric energy, can communication be carried out again, self can also carry out temperature survey.Which offers a saving the equipment such as ADSL, the OPGW increased in order to power communication, also can reduce the accidents such as the thunderbolt caused because of OPGW and threaten.The GPS wire temperature measuring equipment of the use taked at present work very high cost can also be saved in addition, save huge cost.Using cable of the present invention as the circuit of transferring electric power time, staff directly can determine the actual bearer situation of circuit to line temperature according to described traverse survey.
The present invention to reinforcement 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 build in environment-friendly type, the controlling the trend of economical society in country instantly with all strength and more demonstrate powerful realistic meaning.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of stainless steel light unit of the present invention.
Fig. 3 is the structural representation of carbon fiber complex core of the present invention.
Embodiment
As shown in Figure 1,3, one is tested oneself tenderness insulative carbon fiber leader cable, comprise four conductor wire cores, be coated with insulation lining 8, metallic sheath 6 and non metallic sheath 7 outward successively at described four conductor wire cores, between described four conductor wire cores and insulation lining 8, be filled with magnesium oxide insulated filler 4; Described conductor wire core center is carbon fiber complex core 1, and described carbon fiber complex core comprises carbon fiber wire 9 and glass fiber 10, layer centered by carbon fiber wire 9, and many glass fibers 10 are stranded in outside described carbon fiber wire 9; In the present embodiment, described carbon fiber wire is one, and described glass fiber is the six roots of sensation.Insulating barrier 2 and protective layer 3 is coated with successively outside described carbon fiber complex core 1; Also include stainless steel light unit 5, described stainless steel light unit 5 is contained in described magnesium oxide insulated filler 4.
As shown in Figure 2; described light unit 5 comprises multifiber 51 and the Loose tube 52 set gradually from inside to outside, non-metal reinforced layer 53 and protective sleeve 54; Loose tube 52 is enclosed within outside optical fiber 51; full dry type water-blocking material 55 is filled in Loose tube 52; be provided with many equally distributed water blocking yarns 56 in non-metal reinforced layer 53, be embedded with between non-metal reinforced layer 53 and protective sleeve 54 and tear rope 57.At least one optical fiber is inscribe the grating fibers having thermometric grating, and grating fibers forms a grating point for measuring temperature at interval of predetermined distance, and predetermined distance is 300-500 rice.
The present invention adopts the method directly making imprinting grating on optical fiber to carry out the manufacture of thermometric conductor.Be the light sensitivity utilizing fiber optic materials with the grating fibers that optical fiber imprinting becomes, by special processing mode, make to form space phase grating in fibre core, be partially formed the mirror surface of an arrowband, reflection is formed 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 change can change reflection wavelength, by measuring the wavelength change of reverberation, just can measure the optical fiber temperature sensor of grating present position.Equally, by measuring the delay of reverberation, the position of grating can be learnt.Here it is utilizes the principle of grating fibers thermometric.
Direct quarter, the mode of grating did not produce supplementary load loss, and can not affect measuring distance, this production method is better than the production method of welding.The grating fibers thermometric mode become by optical fiber imprinting is owing to being special optical fiber targetedly, and reflected signal is strong, therefore requires all lower than Raman reflection thermometric mode to the transmitting power of equipment and receiving sensitivity, and the good stability of equipment.The benefit simultaneously brought is far measuring distance, and measuring distance can at more than 100km, and certainty of measurement is within ± 2 DEG C.
At least one optical fiber in these optical fiber carries out inscription grating, carries out inscription grating, by the temperature sensor of utilizing emitted light signal measurement diverse location grating in the position of setting.Here it is achieves and utilizes grating fibers thermometric.The present invention does not need the continuous temperature distribution of measuring whole piece circuit, every 300 ~ 500 meters of measurement points can be selected, or strengthen distribution optical grating point in sag minimum point, select the thermometric mode monitoring circuit variations in temperature of grating fibers, defeated biography capacity can be adjusted by the temperature grasped at any time.Preferably, 300 meters, 400 meters, the 500 meters spacing distances as adjacent point for measuring temperature can be selected.
According to a specific embodiment of the present invention, light unit inside is installed with 24 optical fiber, and 8 optical fiber in these 24 optical fiber carry out inscription grating.All imprinting 15 gratings on every root in these 8 optical fiber, i.e. totally 15 points for measuring temperature on every root.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.
As used cable of the present invention in actual production, not only can normal transmission of electric energy but also can communication be carried out, self can also carry out temperature survey.Which save the equipment such as ADSL, the OPGW increased in order to power communication, also can reduce the accidents such as the thunderbolt caused because of OPGW and threaten.The GPS wire temperature measuring equipment of the use taked at present work very high cost can also be saved in addition, save huge cost.Using cable of the present invention as the circuit of transferring electric power time, staff directly can determine the actual bearer situation of circuit according to the line temperature measured.
Claims (1)
1. a tenderness insulative carbon fiber leader cable of testing oneself, it is characterized in that, comprise four conductor wire cores, be coated with insulation lining, metallic sheath and non metallic sheath successively outward at described four conductor wire cores, be filled with magnesium oxide insulated filler between conductor wire core and insulation lining at described four; Described conductor wire core center is carbon fiber complex core, described carbon fiber complex core comprises carbon fiber wire and glass fiber, layer centered by carbon fiber wire, many glass fibers are stranded in outside described carbon fiber wire, are coated with insulating barrier and protective layer successively outward at described carbon fiber complex core; Also include a light unit, described smooth unit is contained in described magnesium oxide insulated filler; Described light unit comprises multifiber and the Loose tube set gradually from inside to outside, non-metal reinforced layer and protective sleeve, described Loose tube is enclosed within outside described optical fiber, full dry type water-blocking material is filled in described Loose tube, be provided with many equally distributed water blocking yarns in described non-metal reinforced layer, be embedded with between described non-metal reinforced layer and described protective sleeve and tear rope; At least one optical fiber is inscribe the grating fibers having thermometric grating, and grating fibers forms a grating point for measuring temperature at interval of predetermined distance, and predetermined distance is 300-500 rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310440535.6A CN104464938A (en) | 2013-09-25 | 2013-09-25 | Self-temperature-measurement flexible insulating carbon fiber leader cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310440535.6A CN104464938A (en) | 2013-09-25 | 2013-09-25 | Self-temperature-measurement flexible insulating carbon fiber leader cable |
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| CN104464938A true CN104464938A (en) | 2015-03-25 |
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| CN201310440535.6A Pending CN104464938A (en) | 2013-09-25 | 2013-09-25 | Self-temperature-measurement flexible insulating carbon fiber leader cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098226A (en) * | 2016-08-18 | 2016-11-09 | 重庆市南方阻燃电线电缆有限公司 | A kind of isolated form fireproof cable |
-
2013
- 2013-09-25 CN CN201310440535.6A patent/CN104464938A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098226A (en) * | 2016-08-18 | 2016-11-09 | 重庆市南方阻燃电线电缆有限公司 | A kind of isolated form fireproof cable |
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Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |