CN201048061Y - Magnetic suspension track traffic power cable - Google Patents
Magnetic suspension track traffic power cable Download PDFInfo
- Publication number
- CN201048061Y CN201048061Y CNU2007200716125U CN200720071612U CN201048061Y CN 201048061 Y CN201048061 Y CN 201048061Y CN U2007200716125 U CNU2007200716125 U CN U2007200716125U CN 200720071612 U CN200720071612 U CN 200720071612U CN 201048061 Y CN201048061 Y CN 201048061Y
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- CN
- China
- Prior art keywords
- layer
- power cable
- magnetic
- traffic power
- shielding layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model relates to a magnetic suspension rail transit power cable, which includes a conductive body, an inner shielding layer, a crosslinked polyethylene insulation layer, an outer shielding layer and a round copper wire layer, wherein, the inner shielding layer is arranged outside the conductive body, and the crosslinked polyethylene insulation layer is arranged between the inner shielding layer and the outer shielding layer. The utility model is characterized in that a semi-conductive buffering resistivity water belt layer, and a resistivity water yarn layer, a double-sided resistivity water belt layer, a waterproof layer, an inner restrictive coating and an outer restrictive coating are respectively arranged outside the round copper wire layer. The utility model has the advantages of resistivity water characteristic in the long direction and the radial direction. The electric property corresponds with the request prescribed in a latest edition GB/T12706-2002 standard of the national standard.
Description
Technical field
The utility model relates to a kind of magnetic-levitation traffic power cable, belongs to the power cable technical field.
Background technology
The cable laying of magnetic-levitation traffic electric power is in overpass circuit both sides, because the magnetic suspension train speed per hour is high, reaches more than the 450km/h, so require nature just very high to the reliability of cable and fail safe.
Magnetic-levitation traffic power cable is compared with the power cable of existing GB regulation and mainly contain following difference on performance:
(1) the Halogen performance during cable fire should be able to satisfy under the IEC60754-2 rated condition, and burning produces HCl gas emission and is not more than 5mg/g; Low smoke performance during cable fire should be able to satisfy under the IEC61034-1/2 rated condition, and its minimum light transmittance of smoke density that burning produces is not less than 60%; The machinery of cable Halogen sheath, cryogenic tensile and high temperature pressure performance should satisfy the related request among IEC60811-1-1, IEC60811-1-4 and the IEC60811-3-1 respectively.Common power cable does not then have these regulations, and owing to usually adopt igelite as oversheath, thereby may bring pollution to environment during burning;
(2) magnetic-levitation traffic power cable is when rated voltage 20kV, and the strictness of partial discharge index request is promptly at 2U
0During voltage (24kV), partial discharge can not be greater than 2pC.And existing common electric power cable standard is at 1.73 U
0In the time of (20.8kV), partial discharge is not more than 10pC;
(3) magnetic-levitation traffic electric power cable waterproof performance requirement is higher: require vertically and radially all blocking water of cable, and common power cable does not have such requirement;
(4) magnetic-levitation traffic power cable requires the controlling dimension deviation range little, and its insulation eccentricity degree can not be greater than 8%, and common power cable is that the cable of 35kV just has the requirement of insulation eccentricity degree to electric pressure only, and index is to be not more than 15%;
Summary of the invention
The purpose of this utility model provides the magnetic-levitation traffic power cable that a kind of electric property meets national standard.
For realizing above purpose, the technical solution of the utility model provides a kind of magnetic-levitation traffic power cable, comprise conductor, internal shield, crosslinked polyetylene insulated layer, outer shielding layer and round copper wire layer, conductor is provided with internal shield outward, between internal shield and outer shielding layer, be provided with crosslinked polyetylene insulated layer, it is characterized in that, between outer shielding layer and round copper wire layer, be provided with the semi-conductive buffer water-blocking band layer, outside the round copper wire layer, be provided with the layer that blocks water, two-sided water blocking tape layer, watertight composition, inner restrictive coating and external sheath layer successively.
Described two-sided water blocking tape layer is the overlapping wrapped two-sided waterstop of one deck in copper strips outside; Described watertight composition is vertical alclad plastic composite strip; Described inner restrictive coating is a polyethylene layer; Described external sheath layer is the low smoke halogen-free flame-retardant polyolefin plastic layer.
The utility model adopts the low-smoke halogen-free polyolefin flame-retardant sheath material to substitute the pvc sheathing compound that common power cable is used, the Halogen performance satisfies IEC60754-2 when satisfying cable fire, low smoke performance satisfies IEC61034-1/2 during cable fire, and the mechanical performance of cable Halogen sheath, cryogenic stretching performance and high temperature pressure performance should satisfy the related request among IEC60811-1-1, IEC60811-1-4 and the IEC60811-3-1 respectively.
Radially stop water of the present utility model adopts vertical alclad plastic composite strip, extrudes layer of polyethylene plastics or low-smoke halogen-free polyolefin plastics simultaneously and forms the waterproof sheath; Vertically block water and then take on relevant each layer, to use corresponding material water-proof material, fill out with waterproofing rope or water blocking yarn in gapped place, there is the place employing of wrapped belt to add the bag waterstop, the common feature of these material water-proof materials is after meeting water, can expand rapidly at short notice, and have and metal material and other adjacent materials favorable compatibility.Expansion increases volume, stops up the space, thereby stops moisture further to the cable longtitudinal dispersion.Strict with technological operation, after the per pass operation is finished, all need sampling through check and water blocking test, can change next procedure over to after qualified.
The utility model is chosen high-quality super clean cross-linked polyethylene insulating material, and strict controlling dimension deviation is to reach at 2U
0Partial discharge during voltage is not more than 2pC.
The utility model has the advantages that:
1. electric property of the present utility model meets the requirement of the latest edition GB/T12706-2002 standard code of national standard;
2. should be able to satisfy the PH minimum of stipulating in the IEC60754-2 standard be 4.5 to the electric property Halogen performance that meets the sheath of national standard, conductivity is 10 μ S/mm requirements to the maximum, and it is 60% requirement that the cable fire smoke density that the low smoke performance of sheath should be able to satisfy IEC61034-1/2 is tested a minimum light transmittance;
3. the vertical water blocking test of cable is by water permeabillity test in the IEC60502.2 appendix.
Description of drawings
Fig. 1 is a magnetic-levitation traffic electric power construction of cable schematic diagram.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, be magnetic-levitation traffic electric power construction of cable schematic diagram, described magnetic-levitation traffic power cable is made up of conductor 1, internal shield 2, crosslinked polyetylene insulated layer 3, outer shielding layer 4 and round copper wire layer 6, the conductor 1 outer internal shield 2 that is provided with, between internal shield 2 and outer shielding layer 4, be provided with crosslinked polyetylene insulated layer 3, between outer shielding layer 4 and round copper wire layer 6, be provided with semi-conductive buffer water-blocking band layer 5, outside round copper wire layer 6, be provided with the layer 7 that blocks water, two-sided water blocking tape layer 8, watertight composition 9, inner restrictive coating 10 and external sheath layer 11 successively.
Described two-sided water blocking tape layer 8 is the overlapping wrapped two-sided waterstop of one deck in copper strips outside; Described watertight composition 9 is vertical alclad plastic composite strip; Described inner restrictive coating 10 is a polyethylene layer; Described external sheath layer 11 is the low smoke halogen-free flame-retardant polyolefin plastic layer.
The utility model will become the homemade new varieties that substitute import magnetic suspension cable.
Claims (5)
1. magnetic-levitation traffic power cable, comprise conductor (1), internal shield (2), crosslinked polyetylene insulated layer (3), outer shielding layer (4) and round copper wire layer (6), the outer internal shield (2) that is provided with of conductor (1), between internal shield (2) and outer shielding layer (4), be provided with crosslinked polyetylene insulated layer (3), it is characterized in that, between outer shielding layer (4) and round copper wire layer (6), be provided with semi-conductive buffer water-blocking band layer (5), outside round copper wire layer (6), be provided with the layer that blocks water (7) successively, two-sided water blocking tape layer (8), watertight composition (9), inner restrictive coating (10) and external sheath layer (11).
2. a kind of magnetic-levitation traffic power cable according to claim 1 is characterized in that, described two-sided water blocking tape layer (8) is the overlapping wrapped two-sided waterstop of one deck in copper strips outside.
3. a kind of magnetic-levitation traffic power cable according to claim 1 is characterized in that, described watertight composition (9) is vertical alclad plastic composite strip.
4. a kind of magnetic-levitation traffic power cable according to claim 1 is characterized in that described inner restrictive coating (10) is a polyethylene layer.
5. a kind of magnetic-levitation traffic power cable according to claim 1 is characterized in that described external sheath layer (11) is the low smoke halogen-free flame-retardant polyolefin plastic layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200716125U CN201048061Y (en) | 2007-06-26 | 2007-06-26 | Magnetic suspension track traffic power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200716125U CN201048061Y (en) | 2007-06-26 | 2007-06-26 | Magnetic suspension track traffic power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201048061Y true CN201048061Y (en) | 2008-04-16 |
Family
ID=39300652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200716125U Expired - Fee Related CN201048061Y (en) | 2007-06-26 | 2007-06-26 | Magnetic suspension track traffic power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201048061Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819829A (en) * | 2010-04-20 | 2010-09-01 | 无锡市恒汇电缆有限公司 | Waterproof stain-resistant rubber sheathed cable and manufacturing method thereof |
| CN102568681A (en) * | 2012-01-30 | 2012-07-11 | 江苏新远程电缆股份有限公司 | Environmental protection shock absorption direct current cable for city track traffic |
| CN102592739A (en) * | 2012-03-16 | 2012-07-18 | 无锡市曙光电缆有限公司 | Ultra-high voltage copper wire shielding type power cable longitudinally wrapped by composite aluminium-plastic tape |
| WO2020103660A1 (en) * | 2018-11-22 | 2020-05-28 | 江苏上上电缆集团有限公司 | Method for manufacturing longitudinal and radial water-blocking medium-voltage power cable, and cable |
-
2007
- 2007-06-26 CN CNU2007200716125U patent/CN201048061Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819829A (en) * | 2010-04-20 | 2010-09-01 | 无锡市恒汇电缆有限公司 | Waterproof stain-resistant rubber sheathed cable and manufacturing method thereof |
| CN102568681A (en) * | 2012-01-30 | 2012-07-11 | 江苏新远程电缆股份有限公司 | Environmental protection shock absorption direct current cable for city track traffic |
| CN102592739A (en) * | 2012-03-16 | 2012-07-18 | 无锡市曙光电缆有限公司 | Ultra-high voltage copper wire shielding type power cable longitudinally wrapped by composite aluminium-plastic tape |
| WO2020103660A1 (en) * | 2018-11-22 | 2020-05-28 | 江苏上上电缆集团有限公司 | Method for manufacturing longitudinal and radial water-blocking medium-voltage power cable, and cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080416 Termination date: 20130626 |