CN207264812U - A kind of on-line temperature monitoring optical fiber composite high-voltage cable - Google Patents
A kind of on-line temperature monitoring optical fiber composite high-voltage cable Download PDFInfo
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- CN207264812U CN207264812U CN201720498804.8U CN201720498804U CN207264812U CN 207264812 U CN207264812 U CN 207264812U CN 201720498804 U CN201720498804 U CN 201720498804U CN 207264812 U CN207264812 U CN 207264812U
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- semiconductive
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- light unit
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Abstract
The utility model discloses a kind of on-line temperature monitoring optical fiber composite high-voltage cable, cable core including being extruded with insulation screen, additionally include light unit and some semiconductive bars, light unit and some semiconductive bars are close to for a circumference, and it is spirally wound on insulation screen, thermometric layer is formed, Semi-conductive buffer band is surrounded with outside thermometric layer, metallic shield set, nonmetallic set and conductive layer are equipped with successively outside Semi-conductive buffer band.Light unit and semiconductive bar circumference are wrapped on insulation screen by the utility model, and outsourcing Semi-conductive buffer band, metallic shield set, nonmetallic set and conductive layer, while cable instantaneous temperature is real-time and accurately reacted, ensure the good mechanical performance of cable, and from magnetic interference, it is independent of each other with optical fiber monitoring, drastically increases the service life of cable.
Description
Technical field
A kind of high-tension cable is the utility model is related to, more particularly, to a kind of on-line temperature monitoring optical fiber composite high-voltage electricity
Cable.
Background technology
Cable operating temperature is excessive, and insulating materials aging is speeded up, and cable life will shorten, or even cable is broken at once
It is bad.Therefore, the temperature change of cable, high pressure, extra-high voltage for cable especially high capacity transmission are monitored and controlled in real time
Cable safety and economic operation, just seems particularly significant.High pressure, ultra-high voltage cross-linking polyethylene-insulated power cable are generally with band metallic sheath
The single-core cable of shielding is in the majority, since high voltage single-core cable is not easy to place temperature-measuring optical fiber, if thermometric light unit arbitrarily put
Put in metallic sheath, be subject to extruded insulation shield dead weight and cable laying when curved influence, easily cause temperature-measuring optical fiber by
Lateral pressure and pulling force effect, influence the normal work of temperature-measuring optical fiber.At present, known high-tension cable on-line temperature monitoring is simply adopted
With contact or the surface temperature of non-contact testing cable, had a great influence by environmental factor and heat transfer, the temperature measured
It cannot real-time and accurately reflect the Genuine Instant temperature of cable so that some safeguard measure hysteresis motions, cause security incident.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of on-line temperature monitoring optical fiber composite high-voltage cable,
Real-time and accurately to reflect the Genuine Instant temperature of cable, while original electric field distribution is not changed.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of on-line temperature monitoring optical fiber composite high-voltage cable, including the cable core of insulation screen is extruded with, additionally
Including light unit and some semiconductive bars, light unit and some semiconductive bars are close to for a circumference, and are spirally wound on insulation
On shielded layer, thermometric layer is formed, Semi-conductive buffer band is surrounded with outside thermometric layer, metallic shield is equipped with successively outside Semi-conductive buffer band
Set, nonmetallic set and conductive layer.
The light unit includes semiconductive PBT beam tubes, and more temperature-measuring optical fibers, temperature-measuring optical fiber are equipped with semiconductive PBT beam tubes
Semiconductive fiber paste is filled between semiconductive PBT beam tubes.
The outside diameter of the light unit is identical with the diameter of semiconductive bar.
The semiconductive bar and insulation screen are made by semiconductive material, and Semi-conductive buffer band is by semi-conductive tape and half
Conductive particulate expandable is combined, and metallic shield set is made for metal set or aluminum alloy sleeve, nonmetallic set of high molecular material,
Conductive layer is electrically conductive graphite coating.
The utility model has the advantages that：Light unit and semiconductive bar circumference are wrapped in insulation screen by the utility model
On, and outsourcing Semi-conductive buffer band, metallic shield set, nonmetallic set and conductive layer, real-time and accurately reacting cable moment temperature
While spending, it is ensured that the good mechanical performance of cable, and from magnetic interference, be independent of each other, be greatly enhanced with optical fiber monitoring
The service life of cable.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of light unit in the utility model.
Wherein, 1, insulation screen, 2, semiconductive bar, 3, light unit, 4, Semi-conductive buffer band, 5, metallic shield set, 6,
Nonmetallic set, 7, conductive layer, 8, temperature-measuring optical fiber, 9, semiconductive fiber paste, 10, semiconductive PBT beam tubes, 11, cable core.
Embodiment：
As shown in Figure 1, a kind of on-line temperature monitoring optical fiber composite high-voltage cable, including it is extruded with insulation screen 1
Cable core 11, additionally including light unit 3 and some semiconductive bars 2, light unit 3 and some semiconductive bars 2 are close to for a circumference,
And be spirally wound on insulation screen 1, thermometric layer is formed, monitors the temperature change of cable in real time, while screw pitch can prevent
The damage to light unit 3 is only bent and stretched during cable laying, and Semi-conductive buffer band 4, semi-conductive buffer are surrounded with outside thermometric layer
Metallic shield set 5, nonmetallic set 6 and conductive layer 7 are equipped with outside band 4 successively.
As shown in Fig. 2, light unit 3 includes semiconductive PBT beam tubes 10, more temperature measuring opticals are equipped with semiconductive PBT beam tubes 10
Fibre 8, is filled with semiconductive fiber paste 9, and the outside diameter of light unit 3 and semiconductive bar between temperature-measuring optical fiber 8 and semiconductive PBT beam tubes 10
2 diameter is identical, so that the semiconductive bar that light unit 3 is solid equivalent to one, its semiconductive resistivity and insulation screen 1
Resistivity it is close, and semiconductive bar 2 and insulation screen 1 are made by semiconductive material, the insulation screen so extruded
1st, the electrical property of thermometric layer and Semi-conductive buffer band 4 is basically identical, and electric field is not distorted.The base-material of semiconductive PBT beam tubes 10
For PBT plastic, there is excellent mechanical material resources performance, temperature-measuring optical fiber 8 can be protected well, protect it from the work of mechanical force
With, and semiconductive bar 2, semiconductive PBT beam tubes 10 are close with the linear expansion coefficient of insulation screen 1, with cable load
The common expansion or shrinkage of mechanical periodicity, makes effect of the light unit 3 from stress, in this way, temperature-measuring optical fiber 8 can perceive electricity well
The running temperature of cable.
Semi-conductive buffer band 4 is combined by semi-conductive tape and semiconductive particulate expandable, not only with half conductivity, is gone back
Block water and acted on buffer pad, can further slow down the effect of lateral pressure and thermal expansion force, make laying of the light unit 3 in cable
With the effect almost not stressed in operation；Metallic shield set 5 is covered for metal or aluminum alloy sleeve, makees except cable shield ground connection is played
With outer, also there is radial water-resisting, prevent moisture or moisture from invading cable；Nonmetallic set 6 is made of high molecular material, has
Good anti-corrosion effect；Conductive layer 7 is electrically conductive graphite coating, makes cable good earth.
Further, since temperature-measuring optical fiber 8 is made of nonmetallic quartz medium material, insulating properties is preferable, both from electromagnetic field
Interference, the electric energy production that 11 inner wire of cable core transmits will not be disturbed, it is ensured that the transmission of the electric energy of cable and optical fiber monitoring are mutual
Do not influence.
Claims (4)
1. a kind of on-line temperature monitoring optical fiber composite high-voltage cable, including the cable core of insulation screen is extruded with, its feature exists
In：Further include light unit and some semiconductive bars, the light unit and some semiconductive bars are close to for a circumference, and spiral twine
It is wound on insulation screen, forms thermometric layer, be surrounded with Semi-conductive buffer band outside the thermometric layer, outside the Semi-conductive buffer band
Metallic shield set, nonmetallic set and conductive layer are equipped with successively.
2. on-line temperature monitoring according to claim 1 optical fiber composite high-voltage cable, it is characterised in that：The light unit
Including semiconductive PBT beam tubes, more temperature-measuring optical fibers, the temperature-measuring optical fiber and semiconductive PBT are equipped with the semiconductive PBT beam tubes
Semiconductive fiber paste is filled between beam tube.
3. on-line temperature monitoring according to claim 1 or 2 optical fiber composite high-voltage cable, it is characterised in that：The light
The outside diameter of unit is identical with the diameter of semiconductive bar.
4. on-line temperature monitoring according to claim 1 optical fiber composite high-voltage cable, it is characterised in that：The semiconductive
Bar and insulation screen are made by semiconductive material, and the Semi-conductive buffer band is answered by semi-conductive tape and semiconductive particulate expandable
Conjunction forms, and the metallic shield set is metal set or aluminum alloy sleeve, and the nonmetallic set is made of high molecular material, described to lead
Electric layer is electrically conductive graphite coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720498804.8U CN207264812U (en) | 2017-05-08 | 2017-05-08 | A kind of on-line temperature monitoring optical fiber composite high-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720498804.8U CN207264812U (en) | 2017-05-08 | 2017-05-08 | A kind of on-line temperature monitoring optical fiber composite high-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207264812U true CN207264812U (en) | 2018-04-20 |
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ID=61914859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720498804.8U Active CN207264812U (en) | 2017-05-08 | 2017-05-08 | A kind of on-line temperature monitoring optical fiber composite high-voltage cable |
Country Status (1)
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| CN (1) | CN207264812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992035A (en) * | 2017-05-08 | 2017-07-28 | 江苏通光强能输电线科技有限公司 | A kind of on-line temperature monitoring optical fiber composite high-voltage cable |
-
2017
- 2017-05-08 CN CN201720498804.8U patent/CN207264812U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992035A (en) * | 2017-05-08 | 2017-07-28 | 江苏通光强能输电线科技有限公司 | A kind of on-line temperature monitoring optical fiber composite high-voltage cable |
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