CN206301623U - A kind of optical fiber combined temp sensing intelligent low-voltage cable - Google Patents
A kind of optical fiber combined temp sensing intelligent low-voltage cable Download PDFInfo
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- CN206301623U CN206301623U CN201621460746.1U CN201621460746U CN206301623U CN 206301623 U CN206301623 U CN 206301623U CN 201621460746 U CN201621460746 U CN 201621460746U CN 206301623 U CN206301623 U CN 206301623U
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Abstract
The utility model discloses a kind of optical fiber combined temp sensing intelligent low-voltage cable, it is characterized in that with a Fibre Optical Sensor unit, two to five cable units, an and optical transmission unit is twisted into cable core, when cable unit quantity is more than two, Fibre Optical Sensor unit is located at center；In the outside of cable core, presumable belting layer, screen layer, inner liner, armor and outer jacket are set gradually from inside to outside；The utility model is integrated Fibre Optical Sensor, fiber optic communication and power transmission, and each unit is separate, realizes the function of power transmission, signal transmission and monitoring temperature integration.Grating array type sensor fibre is used in the utility model, its sensing point is more up to thousands of, and distance sensing is long, high mechanical strength, fast response time, temperature test high precision.
Description
Technical field
The utility model is related to apply the optical fiber combined temp sensing intelligent low-voltage cable in power transmission, belongs to electric power
Transmission Fibers communication field of sensing technologies.
Background technology
Power cable carries very important effect in whole operation of power networks, and its safe operation has to whole power network
Special significance.But the normal cable for transmitting electric power is used in the market, without to inherently safe and fortune
The function that row state is perceived.Current overload, local pressure when power cable runs etc., are all likely to result in the safety of cable
Operation hidden danger, and power department be as these reasons, must inspect periodically maintenances, laborious consumption wealth is time-consuming.
Utility model content
The utility model is to avoid the deficiency existing for above-mentioned prior art, there is provided a kind of optical fiber combined temp senses intelligence
Energy low-voltage cable, Fibre Optical Sensor, fiber optic communication and power transmission are organically combined, and pass electric power transfer unit, light
Defeated unit is separate, do not interfere with each other, to reach what power transmission, signal transmission and body running temperature monitor in real time were integrated
Function.
The utility model is adopted the following technical scheme that to solve technical problem：
The utility model optical fiber combined temp sensing intelligent low-voltage cable is structurally characterized in that：With a Fibre Optical Sensor list
Unit, two to five cable units, an and optical transmission unit is twisted into cable core, the cable unit quantity more than two
When, Fibre Optical Sensor unit is centrally-disposed；In the outside of the cable core, belting layer, shielding are set gradually from inside to outside
Layer, inner liner, armor and outer jacket；
The Fibre Optical Sensor unit is that a sensor fibre is embedded in metal tube, and the sensor fibre is grating array
Type sensor fibre；
The cable unit is to be twisted into cable conductor by electrician's copper free wire, and shape is extruded on the surface of the cable conductor
Into plastic insulating layer；
The optical transmission unit is that optical fiber is inserted in into Loose tube, and shape is filled with the compound that blocks water in the Loose tube
Into inner waterproofing layer；Centered on a nonmetallic strengthening core, each Loose tube is around the common stranded circular cable of nonmetallic strengthening core
Core, the compound that blocks water is filled at the gap of the circular cable core and forms exterior waterproof coating, extrudes to be formed on the circular cable core
Sheath.
The design feature of the utility model optical fiber combined temp sensing intelligent low-voltage cable lies also in：The sensor fibre is
Reflectivity is 0.01%~1% grating array type sensor fibre under 1550nm wavelength.
The design feature of the utility model optical fiber combined temp sensing intelligent low-voltage cable lies also in：Constitute cable conductor
The elongation at break of electrician's copper free wire is not less than 25%.
The design feature of the utility model optical fiber combined temp sensing intelligent low-voltage cable lies also in：The Transmission Fibers are
Single-mode fiber or multimode fibre.
Compared with the prior art, the utility model has the beneficial effect that：
1st, various exceptions pointed in background technology are most of can be embodied by the change of cable body running temperature
Out, power department can be allowed to understand the operation shape of cable body at any time using the utility model real-time monitoring cable operating temperature
Condition, deals carefully with time, is switched to " scientific management " by " experience management ".
2nd, be combined for the function of optical fiber sensing, fiber optic communication and power transmission by the utility model, correlation unit
Work it is separate, do not interfere with each other, realize power transmission, signal transmission and body running temperature monitor in real time integration
Whether function, judge cable in normal operating conditions or overload, compromise state by monitoring the actual temperature of cable, it is ensured that
The normal orderly operation of cable, effectively reduces the fault rate of power network.
3rd, grating array type sensor fibre is used in the utility model, its sensing point spacing is small, and quantity is reachable on 1 circuit
Thousands of, test position precision is high, high mechanical strength, fast response time, and temperature test high precision, distance sensing is long.
4th, the strengthening core in the utility model in optical transmission unit is nonmetallic strengthening core, it is to avoid metallic strength member is in electricity
Influence of the eddy-current loss produced in power transmitting procedure to cable.
5th, grating array type sensor fibre is used in the utility model, Exterior cable certain area can be detected in the short time
Interior temperature change, can accomplish and alarm and precise positioning for the fire incident in the region, it is to avoid accident upgrading, reduction are damaged
Lose.
6th, the Fibre Optical Sensor unit in the utility model is adjacent with every cable unit, can be detected simultaneously by every cable list
The temperature change of unit, the running temperature of displays temperature highest cable unit.
Brief description of the drawings
Fig. 1 is the utility model structural representation；
Fig. 2 is Fibre Optical Sensor cellular construction schematic diagram in the utility model；
Fig. 3 is cable unit structural representation in the utility model；
Fig. 4 is optical transmission unit structural representation in the utility model.
Label in figure：1 Fibre Optical Sensor unit, 1-1 sensor fibres, 1-2 metal tubes, 2 cable units, 2-1 cable conductors, 2-
2 plastic insulating layers, 3 optical transmission units, 3-1 optical fiber, 3-2 Loose tubes, 3-3 inner waterproofings layer, 3-4 nonmetallic strengthening cores are prevented outside 3-5
Water layer, 3-6 sheaths, 4 cable cores, 5 belting layers, 6 screen layers, 7 inner liners, 8 armors, 9 outer jackets.
Specific embodiment
Referring to Fig. 1, the structure type of optical fiber combined temp sensing intelligent low-voltage cable in the present embodiment is passed with an optical fiber
Sense unit 1, two to five cable units 2, an and optical transmission unit 3 is twisted into cable core 4, surpasses in the quantity of cable unit 2
When crossing two, by Fibre Optical Sensor unit it is centrally-disposed on；In the outside of cable core 4, belting layer is set gradually from inside to outside
5th, screen layer 6, inner liner 7, armor 8 and outer jacket 9.
As shown in Fig. 2 Fibre Optical Sensor unit 1 is that a sensor fibre 1-1 is embedded in metal tube 1-2, sensor fibre
1-1 is grating array type sensor fibre, is to use UV light optical fiber online in fiber drawing process by grating writing
Fibre core, then carries out the sensor fibre that optical fiber coating solidification is made structural integrity, sensor fibre is had good mechanical strength
With consistent sensing characteristicses；In the present embodiment, sensor fibre 1-1 is that reflectivity is 0.01%~1% under using 1550nm wavelength
Grating array type sensor fibre.
As shown in figure 3, cable unit 2 is to be twisted into cable conductor 2-1 by electrician's copper free wire, cable conductor 2-1's
Surface extrudes to form plastic insulating layer 2-2.
As shown in figure 4, optical transport cable unit 3 is that optical fiber 3-1 is inserted in into Loose tube 3-2, with blocking water in Loose tube 3-2
Compound is filled to form inner waterproofing layer 3-3；Centered on a nonmetallic strengthening core 3-4, each Loose tube 3-2 is around nonmetallic
The common stranded circular cable cores of strengthening core 3-4, the compound that blocks water are filled at the gap of circular cable core and form exterior waterproof coating 3-5,
Extrude to form sheath 3-6 on circular cable core.
In the present embodiment, the elongation at break for constituting electrician's copper free wire of cable conductor 2-1 is not less than 25%, its conductor
Performance indications meet the conductor material requirements of GB/T3956-2008, and use regular stranded, and twisted wire pitch is transmitted at 10-12 times
Optical fiber 3-1 is single-mode fiber or multimode fibre.
Fibre Optical Sensor unit following steps for manufacturing in the present embodiment：
Step 1, in fiber drawing process it is online using UV light optical fiber by grating writing fibre core, then carry out
Optical fiber coating solidification is made the sensor fibre of structural integrity, sensor fibre and Fibre Optical Sensor unit is had good mechanical strength
With consistent sensing characteristicses.
Step 2, sensor fibre is embedded in metal tube using seamed metal tube welding procedure, to ensure that sensor fibre is excellent
Good sensing characteristicses, make sensor fibre embedded metal tube under the tension of stabilization in cabling process.
Cable unit following steps for manufacturing in the present embodiment：
Step 1, cable conductor is twisted into using electrician's copper free wire, it is 11-20 to set stranded lay ratio；Cut for nominal
Face is not more than 35mm2Cable conductor, its cable conductor presses structure using circle；It is not less than 50mm for nominal section2Electricity
Cable conductor, its cable conductor presses structure using abnormity.
Step 2, extrusion and cooling shaping that cable conductor is completed plastic insulating layer on extruder.
Plastic insulating layer is that, with organosilane crosslinked polyethylene as material, it is 110 DEG C~180 DEG C to set the technological temperature extruded,
Each heating zone of the extruder from charging aperture to head is followed successively by：Charging zone, compressional zone, homogenization zone, machine neck region and head area, are squeezing
Go out in machine, from charging zone to head area formation staged calefactive interzone from low to high；With 50 DEG C~70 after extrusion is completed
DEG C water carry out cooling shaping, then the warm water crosslinking of 5-8 hours is carried out through 90 DEG C~100 DEG C of water, complete the system of cable unit
Make.
The technological temperature for setting each heating zone in extruder is respectively：
Charging zone：110 DEG C~115 DEG C；140 DEG C~145 DEG C of compressional zone；155 DEG C~160 DEG C of homogenization zone；
Machine neck region：165 DEG C~170 DEG C；175 DEG C~180 DEG C of head area.
Optical transmission unit following steps for manufacturing in the present embodiment：
Step 1, the optical fiber of coloring is put into Loose tube in the way of active unwrapping wire, filling blocks water chemical combination in Loose tube
Thing forms inner waterproofing layer, and the fine tension force of putting of optical fiber is set to 50-120g.
Step 2, centered on nonmetallic strengthening core, by the common stranded circular cable core of Loose tube and strengthening core, and fill
The compound that blocks water forms exterior waterproof coating, extrudes to form pe sheath in circular cable core appearance.
Claims (4)
1. a kind of optical fiber combined temp sensing intelligent low-voltage cable, it is characterized in that：With a Fibre Optical Sensor unit (1), two to five
Individual cable unit (2), an and optical transmission unit (3) is twisted into cable core (4), exceedes in the quantity of the cable unit (2)
It is at two, Fibre Optical Sensor unit (1) is centrally-disposed；In the outside of the cable core (4), bag is set gradually from inside to outside
Belt (5), screen layer (6), inner liner (7), armor (8) and outer jacket (9)；
The Fibre Optical Sensor unit (1) is that a sensor fibre (1-1) is embedded in metal tube (1-2), the sensor fibre
(1-1) is grating array type sensor fibre；
The cable unit (2) is to be twisted into cable conductor (2-1) by electrician's copper free wire, in the cable conductor (2-1)
Surface extrudes to form plastic insulating layer (2-2)；
The optical transmission unit (3) is that optical fiber (3-1) is inserted in into Loose tube (3-2), with blocking water in the Loose tube (3-2)
Compound is filled to form inner waterproofing layer (3-3)；Centered on a nonmetallic strengthening core (3-4), each Loose tube (3-2) around
The common stranded circular cable core of nonmetallic strengthening core (3-4), the filling compound that blocks water is formed at the gap of the circular cable core
Exterior waterproof coating (3-5), extrudes to form sheath (3-6) on the circular cable core.
2. optical fiber combined temp sensing intelligent low-voltage cable according to claim 1, it is characterized in that：The sensor fibre
(1-1) is the grating array type sensor fibre that reflectivity is 0.01%~1% under 1550nm wavelength.
3. optical fiber combined temp sensing intelligent low-voltage cable according to claim 1, it is characterized in that：Constitute cable conductor
The elongation at break of electrician's copper free wire of (2-1) is not less than 25%.
4. optical fiber combined temp sensing intelligent low-voltage cable according to claim 1, it is characterized in that：The Transmission Fibers
(3-1) is single-mode fiber or multimode fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621460746.1U CN206301623U (en) | 2016-12-29 | 2016-12-29 | A kind of optical fiber combined temp sensing intelligent low-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621460746.1U CN206301623U (en) | 2016-12-29 | 2016-12-29 | A kind of optical fiber combined temp sensing intelligent low-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206301623U true CN206301623U (en) | 2017-07-04 |
Family
ID=59204878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621460746.1U Active CN206301623U (en) | 2016-12-29 | 2016-12-29 | A kind of optical fiber combined temp sensing intelligent low-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206301623U (en) |
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2016
- 2016-12-29 CN CN201621460746.1U patent/CN206301623U/en active Active
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