CN112259291A - Intelligent medium-voltage photoelectric composite cable for rail transit - Google Patents
Intelligent medium-voltage photoelectric composite cable for rail transit Download PDFInfo
- Publication number
- CN112259291A CN112259291A CN202011197436.6A CN202011197436A CN112259291A CN 112259291 A CN112259291 A CN 112259291A CN 202011197436 A CN202011197436 A CN 202011197436A CN 112259291 A CN112259291 A CN 112259291A
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- layer
- copper wire
- shielding layer
- optical fiber
- stainless steel
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000013307 optical fiber Substances 0.000 claims abstract description 38
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 31
- 239000010935 stainless steel Substances 0.000 claims abstract description 31
- 239000004020 conductor Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 230000005622 photoelectricity Effects 0.000 claims description 2
- 239000004033 plastic Substances 0.000 abstract description 11
- 229920003023 plastic Polymers 0.000 abstract description 11
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 8
- 238000009529 body temperature measurement Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000002674 ointment Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/005—Power cables including optical transmission elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/021—Features relating to screening tape per se
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Communication Cables (AREA)
Abstract
The invention discloses an intelligent medium-voltage photoelectric composite cable for rail transit, which belongs to the technical field of cables and comprises a conductor wire core, wherein the conductor wire core is sequentially provided with a conductor shielding layer, an insulating shielding layer, a semi-conductive buffer layer, a copper wire shielding layer, a water-blocking tape layer, an aluminum-plastic composite layer, an isolating sleeve, a non-magnetic armor, a tape isolating layer and an outer sheath from inside to outside, and the intelligent medium-voltage photoelectric composite cable is characterized in that: a copper wire shielding layer is twisted and wound between the semi-conductive buffer layer and the water blocking tape layer, at least one optical fiber unit is arranged on the copper wire shielding layer, and each optical fiber unit comprises a stainless steel pipe sleeve and an optical fiber core arranged in the stainless steel pipe sleeve. The diameter of the stainless steel pipe sleeve is larger than that of the single copper wire of the copper wire shielding layer. The cable has the advantages of strong temperature sensing sensitivity and accuracy, strong fire resistance and the like.
Description
Technical Field
The invention belongs to the technical field of cables, and particularly relates to an intelligent medium-voltage photoelectric composite cable for rail transit.
Background
Along with the rapid and steady development of national subway key projects, particularly, people in subway stations are dense and congested, so that once a fire sign appears, not only is the property loss of the country caused, but also the life safety of a plurality of people is threatened more seriously, how to stably and reliably supply power to a subway system is important, and the early warning is started before a power supply line fails, and the fault position is determined at the first time for overhauling when the power supply line fails. In subway power supply, medium-voltage alternating-current cables of 35kV, 10kV and the like are mainly applied.
At present, the cable fault monitoring mainly comprises temperature detection and anti-theft alarm. The widely applied technology in temperature monitoring is thermocouple temperature measurement and optical fiber temperature measurement.
The principle of thermocouple temperature measurement is that the resistance of a thermocouple changes along with the change of temperature, so that a temperature signal is converted into an electric signal and measured. The thermocouple temperature measurement structure is simple, low in cost and mature in technology, but the thermocouple can only carry out point-mode temperature measurement and cannot carry out on-line temperature monitoring on the whole wire and cable line, so that the thermocouple temperature measurement structure has certain limitation.
The optical fiber has the characteristics of low cost, no electromagnetic interference, no conductivity, safety, explosion prevention, long-distance transmission and the like. The existing optical fiber temperature measuring cable mainly has the following problems:
(1) basically, the temperature sensing optical cable is added into the insulation gap of the multi-core cable, and the temperature sensing optical cable cannot be added into the medium-voltage cable with a single core.
(2) At present, the temperature sensing optical cable is a plastic sheath, and the plastic has the characteristics of heat insulation and poor heat conduction effect, has long heat conduction time and poor temperature sensing effect and cannot be monitored in real time;
(3) the plastic sheath is easy to burn, and when open fire burns, the fiber breaking phenomenon of the temperature sensing cable is caused, so that the effect is lost.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an intelligent medium-voltage photoelectric composite cable for rail transit.
The invention is realized in this way, a track traffic uses the compound cable of intelligent medium voltage photoelectricity, including the conductor sinle silk, the said conductor sinle silk is from inside to outside equipped with the conductor shielding layer, insulating shielding layer, semi-conductive buffer layer, water-blocking tape layer, composite layer of aluminum-plastic, non-magnetic armor, band isolation layer and oversheath in proper order, characterized by that: a copper wire shielding layer is twisted and wound between the semi-conductive buffer layer and the water blocking tape layer, at least one optical fiber unit is arranged on the copper wire shielding layer, and each optical fiber unit comprises a stainless steel pipe sleeve and an optical fiber core arranged in the stainless steel pipe sleeve. The diameter of the stainless steel pipe sleeve is larger than that of the single copper wire of the copper wire shielding layer.
And a copper strip reverse-binding layer is wound between the water-blocking tape layer and the copper wire shielding layer, and the inner surface of the copper strip reverse-binding layer is attached to the copper wire shielding layer and attached to the stainless steel pipe sleeve of the copper wire shielding layer. The optical fiber unit and the copper wire are twisted together and wound on the outer side of the semi-conductive buffer layer, the copper wire shielding layer is tightly attached to the copper strip anti-bundling layer on the outer side, the optical fiber unit is distributed around the semi-conductive buffer layer, and the optical fiber unit can be quickly transmitted to any part of the cable due to temperature abnormality.
The invention has the following technical effects:
1. the optical fiber unit is wound in the single-core medium-voltage cable to serve as the temperature sensing optical cable, so that the novel cable has an optical fiber temperature measuring function.
2. The outer sheath of the optical fiber unit is made of stainless steel materials, the heat conduction effect is good, the temperature change inside or outside the cable can be quickly transmitted to the optical fiber core, and the temperature sensing sensitivity and accuracy are improved.
3. The stainless steel pipe sleeve outside the optical fiber unit has a fire-resistant characteristic, and when the optical fiber unit burns with open fire, the optical fiber core inside can be ensured to be intact, and the temperature measurement function of the optical fiber unit can be ensured to be exerted.
3. The stainless steel pipe sleeve made of the stainless steel material is non-magnetic, meets the product standard, and has the characteristic that the non-magnetic material must be applied to the shielding or armoring of the single-core cable, so that the current-carrying capacity of the cable is not reduced.
4. The stainless steel pipe sleeve of the optical fiber unit has small outer diameter and high strength, is twisted to the outer side of the conductive buffer layer of the cable, can keep the cable round and is easy for subsequent processing and production.
Drawings
FIG. 1 is a cross-sectional view of a cable according to the present invention;
fig. 2 is a cross-sectional view of an optical fiber unit in the present invention.
In the figure, 1, a conductor wire core; 2. a conductor shield layer; 3. an insulating layer; 4. an insulating shield layer; 5. a semiconductive buffer layer; 6. a water blocking tape layer; 7. an aluminum-plastic composite layer; 8. non-magnetic armor; 9. a wrapping tape isolating layer; 10. an outer sheath; 11. an isolation sleeve; 12. an optical fiber unit; 12-1, stainless steel pipe sleeves; 12-2, an optical fiber core; 13. a copper wire; 14. and (4) a copper strip reverse-binding layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
To further illustrate the structure of the present invention, the following detailed description is made with reference to the accompanying drawings:
referring to fig. 1 and 2, an intelligent medium-voltage photoelectric composite cable for rail transit includes a conductor core 1, and the conductor core 1 is sequentially provided with a conductor shielding layer 2, an insulating layer 3, an insulating shielding layer 4, a semiconductive buffer layer 5, a water-blocking tape layer 6, an aluminum-plastic composite layer 7, a nonmagnetic armor 8, a tape isolating layer 9 and an outer sheath 10 from inside to outside. Specifically, the conductor wire core 1 is a multi-bundle copper wire core. The material of the conductor shielding layer 2 is made of semiconducting material and polyethylene as a base material. The insulating layer 3 is made of XLPE, a high molecular material. The insulation shielding layer 4 is made of a semiconductive shielding material. The conductor shielding layer 2, the insulating layer 3 and the insulating shielding layer 4 are extruded. The semi-conductive buffer layer 5 is formed by wrapping a semi-conductive buffer belt. The water-blocking tape layer 6 is formed by wrapping a water-blocking tape. The aluminum-plastic composite layer 7 is an aluminum jacket layer and is longitudinally wrapped and attached. The non-magnetic armour 8 is brass tape. The tape isolating layer 9 is formed by wrapping flame-retardant tape. The outer sheath 10 is a high flame retardant low smoke halogen-free polyolefin sheath or a low smoke low halogen PVC sheath. The outer sheath 10 is extruded. The isolation sleeve 11 is extruded between the nonmagnetic armor 8 and the aluminum-plastic composite layer 7, the isolation sleeve 11 is an extruded PVC sleeve body, is high-flame-retardant low-smoke halogen-free polyolefin, can block water, has low smoke, no halogen and high flame-retardant characteristics, and can improve the flame retardant property of the cable. The semi-conductive buffer layer 5, the water blocking tape layer 6, the non-magnetic armor 8 and the wrapping tape isolating layer 11 are wrapped. The aluminum-plastic composite layer 7 is a longitudinal wrap. The water-blocking tape layer 6, the aluminum-plastic composite layer 7 and the isolation sleeve 11 are used as a comprehensive water-blocking structure.
A copper wire shielding layer is twisted and wound between the semi-conductive buffer layer 5 and the water blocking tape layer 6, and at least one optical fiber unit 12 is arranged on the copper wire shielding layer. And a copper strip reverse-binding layer 14 is wound between the water-blocking tape layer 6 and the copper wire shielding layer. The copper strip winding and binding direction of the copper strip reverse binding layer 14 is opposite to the winding and binding direction of the copper wire 13 of the copper wire shielding layer and the optical fiber unit 12. The optical fiber unit 12 includes a stainless steel pipe jacket 12-1 and an optical fiber core 12-2 disposed in the stainless steel pipe jacket 12-1. The number of fiber units 12 or the number of fiber cores 12-2 can be increased or decreased according to specific use requirements. In this embodiment, the thermal conductivity of the optical fiber core 12-2 to the outside is enhanced. The diameter of the stainless steel pipe sleeve 12-1 is larger than the diameter of the single copper wire of the copper wire shielding layer. The contact between the copper strip anti-prick layer and the stainless steel optical unit can be more sufficient, and the characteristic that the copper strip and the copper wire cover the cable core in a large area is utilized, so that any part of the cable has temperature change and can be transmitted to the stainless steel optical unit through the copper wire shielding layer at the first time. Because the bending property of the stainless steel is poor, and the optical fiber is arranged in the stainless steel, the influence on the stainless steel optical unit when the cable is bent can be greatly improved by twisting the optical fiber on the cable core.
The copper wire 13 is generally any one of 0.70 mm-1.13 mm according to the cable specification and the requirement of the short-circuit current of a user system, and the diameter of the stainless steel pipe sleeve 12-1 of the optical fiber unit 12 is about 1.8 mm. The stainless steel ferrule 12-1 of each fiber unit 12 includes therein a 2 × SM fiber + a 2 × MM50 micron fiber. Namely, the stainless steel pipe sleeve 12-1 comprises two multimode fibers and two single mode fibers.
The optical fiber unit 12 is twisted and wound circumferentially around the semiconductive buffer layer, which improves the bending performance of the optical fiber unit 12. Gaps exist between the optical fiber unit 12 and the copper wires, and the average gap is not larger than 4 mm.
The stainless steel pipe sleeve 12-1 is internally provided with filling ointment for filling the space inside the stainless steel pipe sleeve 12-1. The filled ointment is used as a heat-conducting medium and is filled in the stainless steel pipe sleeve 12-1.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (2)
1. The utility model provides a track traffic is with intelligent middling pressure photoelectricity composite cable, includes conductor sinle silk (1), conductor sinle silk (1) is equipped with conductor shielding layer (2), insulating layer (3), insulation shielding layer (4), semi-conductive buffer layer (5), water-blocking tape layer (6), plastic-aluminum composite layer (7), non-magnetic armor (8), band isolation layer (9) and oversheath (10) from inside to outside in proper order, its characterized in that: a copper wire shielding layer is twisted and wound between the semi-conductive buffer layer (5) and the water blocking tape layer (6), at least one optical fiber unit (12) is arranged on the copper wire shielding layer, the optical fiber unit (12) comprises a stainless steel pipe sleeve (12-1) and an optical fiber core (12-2) arranged in the stainless steel pipe sleeve (12-1), and the diameter of the stainless steel pipe sleeve (12-1) is larger than that of a single copper wire of the copper wire shielding layer.
2. The intelligent medium-voltage photoelectric composite cable for rail transit according to claim 1, wherein: a copper strip reverse-binding layer (14) is wound between the water-blocking tape layer (6) and the copper wire shielding layer, and the inner surface of the copper strip reverse-binding layer (14) is attached to the copper wire shielding layer and attached to a stainless steel pipe sleeve (12-1) of the copper wire shielding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197436.6A CN112259291A (en) | 2020-10-31 | 2020-10-31 | Intelligent medium-voltage photoelectric composite cable for rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197436.6A CN112259291A (en) | 2020-10-31 | 2020-10-31 | Intelligent medium-voltage photoelectric composite cable for rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112259291A true CN112259291A (en) | 2021-01-22 |
Family
ID=74267286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011197436.6A Pending CN112259291A (en) | 2020-10-31 | 2020-10-31 | Intelligent medium-voltage photoelectric composite cable for rail transit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112259291A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202275646U (en) * | 2011-10-08 | 2012-06-13 | 江苏亨通电力电缆有限公司 | Copper wire shielded medium-voltage optical fiber composite cable for smart power grid |
| CN204516411U (en) * | 2015-04-21 | 2015-07-29 | 南昌安特电缆有限公司 | A kind of cable for rail transit line |
| CN106128625A (en) * | 2016-08-29 | 2016-11-16 | 中天科技海缆有限公司 | ± 500kV SZ shape molded line conductor brass wire shielding Optical Fiber Composite direct current cables |
| CN213277581U (en) * | 2020-10-31 | 2021-05-25 | 上海飞航电线电缆有限公司 | Intelligent medium-voltage photoelectric composite cable for rail transit |
-
2020
- 2020-10-31 CN CN202011197436.6A patent/CN112259291A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202275646U (en) * | 2011-10-08 | 2012-06-13 | 江苏亨通电力电缆有限公司 | Copper wire shielded medium-voltage optical fiber composite cable for smart power grid |
| CN204516411U (en) * | 2015-04-21 | 2015-07-29 | 南昌安特电缆有限公司 | A kind of cable for rail transit line |
| CN106128625A (en) * | 2016-08-29 | 2016-11-16 | 中天科技海缆有限公司 | ± 500kV SZ shape molded line conductor brass wire shielding Optical Fiber Composite direct current cables |
| CN213277581U (en) * | 2020-10-31 | 2021-05-25 | 上海飞航电线电缆有限公司 | Intelligent medium-voltage photoelectric composite cable for rail transit |
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