CN201667248U - Energy-saving, environment-friendly, flame-retardant and water-resistant power cable for subway - Google Patents
Energy-saving, environment-friendly, flame-retardant and water-resistant power cable for subway Download PDFInfo
- Publication number
- CN201667248U CN201667248U CN200920252354XU CN200920252354U CN201667248U CN 201667248 U CN201667248 U CN 201667248U CN 200920252354X U CN200920252354X U CN 200920252354XU CN 200920252354 U CN200920252354 U CN 200920252354U CN 201667248 U CN201667248 U CN 201667248U
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- layer
- retardant
- water
- steel wire
- power cable
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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
Abstract
The utility model relates to an energy-saving, environment-friendly, flame-retardant and water-resistant power cable for a subway, which comprises a conductor wire core, wherein the outer surface of the conductor wire core is sequentially packed with a conductor screening layer, an insulating layer, an insulating screening layer, a steel wire screening layer which is formed by twisting a plurality of steel wires, an oxygen insulating layer, a mouse-resistant armor layer and an external protective layer. The energy-saving, environment-friendly, flame-retardant and water-resistant power cable is characterized in that a copper belt layer, a semi-conductive water-resistant layer and an aluminum-plastic composite belt layer are also sequentially packed between the steel wire screening layer and the oxygen insulating layer, the winding and packing direction of the copper belt layer is inverse to the twisting direction of the steel wires in the steel wire screening layer, the semi-conductive water-resistant layer is wound and packed on the external surface of a steel belt layer, and the aluminum-plastic composite belt layer is lengthways packed on the external surface of the semi-conductive water-resistant layer. The energy-saving, environment-friendly, flame-retardant and water-resistant power cable has the advantages of environmental protection, water resistance, flame retardance and long service life.
Description
Technical field
The utility model belongs to the electric line cable technical field of subway engineering electric power system, particularly relates to a kind of subway with energy saving and environment friendly fire-retardant water-resistant power cable.
Background technology
At present, along with the continuous expansion of China's rapid economic development, city size and the obvious quickening of process of modernization, traffic problems constantly highlight, urban track traffic has become the effective measures of some developed countries and regional transport solution problem in the world, and the ground iron rule is the chief component of urban rail transit.In the prior art, the electric line of subway electric power system with the basic structure of cable is: comprise conductor thread core, the conductor thread core outer surface is coated with conductor shield successively, insulating barrier, insulation screen, the steel wire screen, the semiconductive water blocking layer, oxygen barrier layer, protection against rodents armour and outer jacket, all contain halogen in the outer jacket of this cable and the oxygen barrier layer material, learn according to a large amount of experimental datas, light transmittance is below 15% during halogen-containing cable fire, the concentration of its cigarette makes people's naked eyesight can't see within two meters that burning catches fire, the poisonous gas that produces can make the people that dead possibility was just arranged within 2 minutes, life security to the people causes serious threat, and bring greatly difficult to rescue work, in addition, common subway is not provided with watertight composition with cable, in case cable is immersed in water, insulator will be breakdown, causes serious consequence, so be badly in need of a kind of environmental protection of exploitation, block water and safe subway cable.
Summary of the invention
The utility model for the subway that solves the technical problem that exists in the known technology good, the safe and long service life of a kind of water preventing ability is provided with energy saving and environment friendly fire-retardant water-resistant power cable.
The utility model for the technical scheme that solves the technical problem that exists in the known technology and take is: a kind of subway is with energy saving and environment friendly fire-retardant water-resistant power cable, comprise conductor thread core, the conductor thread core outer surface is coated with conductor shield successively, insulating barrier, insulation screen, by the many stranded steel wire screens that form of steel wire, oxygen barrier layer, protection against rodents armour and outer jacket, it is characterized in that: also be coated with the copper strips layer between described steel wire screen and the oxygen barrier layer successively, semiconductive water blocking layer and plastic-aluminum combined belt, and the lapping direction of copper strips layer is opposite with the direction of lay of steel wire in the steel wire screen, the semiconductive water blocking layer is wrapped on the outer surface of firm belt, and plastic-aluminum combined belt is vertical to wrap on the outer surface of semiconductive water blocking layer.
The utility model can also adopt following technical scheme:
Described oxygen barrier layer is that low-smoke non-halogen flame-retardant oxygen barrier material is made.
Described outer jacket is made for the low-smoke halogen-free polyolefin flame-proof material.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, be to be coated with copper strips layer, semiconductive water blocking layer and plastic-aluminum combined belt between steel wire screen and the oxygen barrier layer successively, and the lapping direction of copper strips layer is opposite with the direction of lay of steel wire in the steel wire screen, can increase short circuit current, improve the fail safe of cable; The semiconductive water blocking layer is wrapped on the outer surface of firm belt, plastic-aluminum combined belt is vertical to wrap on the outer surface of semiconductor group water layer, for cable has increased watertight composition, can avoid cable because of long-time soak takes place to leak electricity situation, and can prolong useful life of cable; Oxygen barrier layer is made for the LLDPE material, and outer jacket is made for the low-smoke halogen-free polyolefin flame-proof material, makes cable have environmental protection and fire-retardant advantage, also can prolong the useful life of cable.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, conductor thread core; 2, conductor shield; 3, insulating barrier; 4, insulation screen; 5, steel wire screen; 6, copper strips layer; 7, semiconductive water blocking layer; 8, plastic-aluminum combined belt; 9, oxygen barrier layer; 10, protection against rodents armour; 11, outer jacket.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, a kind of subway is with energy saving and environment friendly fire-retardant water-resistant power cable, comprise the conductor thread core 1 of being located at cable center, the outer surface of conductor thread core 1 is coated with conductor shield 2, insulating barrier 3, insulation screen 4 successively, by the many stranded steel wire screens 5 that form of steel wire, copper strips layer 6, semiconductive water blocking layer 7, plastic-aluminum combined belt 8, oxygen barrier layer 9, protection against rodents armour 10 and outer jackets 11, with this stranding.The lapping direction of copper strips layer 6 is opposite with the direction of lay of steel wire in the steel wire screen 5, can effectively improve the short circuit current of cable, thereby improves the fail safe of cable; Semiconductive water blocking layer 7 is wrapped on the outer surface of steel belt layer 6, and plastic-aluminum combined belt 8 vertical wrapping on the outer surface of semiconductive water blocking layer 7 for cable has increased watertight composition, are avoided cable to be immersed in for a long time and produced electric leakage in the water, and can prolong the useful life of cable; Oxygen barrier layer 9 is a low-smoke non-halogen flame-retardant oxygen barrier material, in the present embodiment, oxygen barrier layer 9 is made at the low-smoke halogen-free polyolefin material more than 40 for oxygen index, and the material of oversheath 11 is the halogen-free polyolefin flame-proof material, have environmental protection and fire-retardant advantage, also can prolong the useful life of cable.
Claims (3)
1. a subway is with energy saving and environment friendly fire-retardant water-resistant power cable, comprise conductor thread core, the conductor thread core outer surface is coated with conductor shield successively, insulating barrier, insulation screen, by the many stranded steel wire screens that form of steel wire, oxygen barrier layer, protection against rodents armour and outer jacket, it is characterized in that: also be coated with the copper strips layer between described steel wire screen and the oxygen barrier layer successively, semiconductive water blocking layer and plastic-aluminum combined belt, and the lapping direction of copper strips layer is opposite with the direction of lay of steel wire in the steel wire screen, the semiconductive water blocking layer is wrapped on the outer surface of firm belt, and plastic-aluminum combined belt is vertical to wrap on the outer surface of semiconductive water blocking layer.
2. subway according to claim 1 is with energy saving and environment friendly fire-retardant water-resistant power cable, and it is characterized in that: described oxygen barrier layer is that low-smoke non-halogen flame-retardant oxygen barrier material is made.
3. subway according to claim 1 is with energy saving and environment friendly fire-retardant water-resistant power cable, and it is characterized in that: described outer jacket is made for the low smoke halogen-free flame-retardant polyolefin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920252354XU CN201667248U (en) | 2009-12-30 | 2009-12-30 | Energy-saving, environment-friendly, flame-retardant and water-resistant power cable for subway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920252354XU CN201667248U (en) | 2009-12-30 | 2009-12-30 | Energy-saving, environment-friendly, flame-retardant and water-resistant power cable for subway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201667248U true CN201667248U (en) | 2010-12-08 |
Family
ID=43268210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920252354XU Expired - Fee Related CN201667248U (en) | 2009-12-30 | 2009-12-30 | Energy-saving, environment-friendly, flame-retardant and water-resistant power cable for subway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201667248U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103366890A (en) * | 2013-07-05 | 2013-10-23 | 苏州天盛电线电缆有限公司 | Self-protection cable |
| CN104575762A (en) * | 2013-10-13 | 2015-04-29 | 宁夏海洋线缆有限公司 | Fire-resistant shielding cable |
-
2009
- 2009-12-30 CN CN200920252354XU patent/CN201667248U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103366890A (en) * | 2013-07-05 | 2013-10-23 | 苏州天盛电线电缆有限公司 | Self-protection cable |
| CN104575762A (en) * | 2013-10-13 | 2015-04-29 | 宁夏海洋线缆有限公司 | Fire-resistant shielding 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: 20101208 Termination date: 20131230 |