CN202662380U - Ratproof refractory medium voltage cable - Google Patents
Ratproof refractory medium voltage cable Download PDFInfo
- Publication number
- CN202662380U CN202662380U CN 201220221299 CN201220221299U CN202662380U CN 202662380 U CN202662380 U CN 202662380U CN 201220221299 CN201220221299 CN 201220221299 CN 201220221299 U CN201220221299 U CN 201220221299U CN 202662380 U CN202662380 U CN 202662380U
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- layer
- polyolefin
- ratproof
- medium voltage
- voltage cable
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Abstract
The utility model relates to power transmission cables and particularly relates to medium voltage cables. The ratproof refractory medium voltage cable comprises two types of annealing copper conductors, wherein a semiconductive polyolefin shielding layer and a crosslinked polyethylene insulating layer are arranged at the outside of the conductor, the semiconductive polyolefin shielding layer at the outside of the insulating layer and a copper core shielding layer form a core wire, a gummed woven glass fabric wrapping layer and a halogen-free low-smoke polyolefin inner jacket are sequentially arranged at the outside of three strands of the core wires, mineral fillers are filled in the core wires, and a steel band armored ratproof layer, a high-flame retardant halogen-free low-smoke polyolefin oxygen barrier, a mica fire protection layer and a halogen-free low-smoke polyolefin outer jacket are sequentially arranged on the core wires. The ratproof refractory medium voltage cable provided by the utility model has the refractory and ratproof properties.
Description
Technical field
The utility model relates to the electric power handling cable, relates in particular to midium voltage cable.
Background technology
Along with the continuous improvement of people's material and cultural life, country was to the gradually attention of fireproofing, the progressively raising of people's awareness of safety in recent years.In order to improve the safe class of power circuit, reduce generation and the loss of electrical fire accident, Minstry of Housing and Urban-Rural Development of People Republic of China (MOHURD), the Ministry of Public Security and some local governments have promulgated some electrical design standards in succession, and clear should adopt fire-resisting cable at some important cable lines or place.
On the other hand, the important places such as modern skyscraper, subway, power plant, nuclear power station, tunnel, the combustible of use is more and more; In a single day each big and medium-sized cities is built subway line in succession, catches fire as these important places, just need to adopt 3.6/6kV ~ 26/35kV grade circuit transferring electric power to keep the operation of key equipment.
In addition, muroid is lived in the world each area widely as a kind of reproductive capacity and the very strong rodent of vitality.Because its front tooth is very flourishing and constantly growth, muroid has the object that bites to keep the sharp habit of its tooth, and the contained distinctive smell of plastics makes it become the object that muroid often bites in the cable cover(ing), so cable line often suffers damaged by rats and affect to cause power breakdown in some occasions.
Summary of the invention
The utility model is intended to address the aforementioned drawbacks, and a kind of protection against rodents fire-proof medium-voltage cable is provided.That the utility model possesses is fire-resistant, the characteristic of mouse bite preventing.
For addressing the above problem, a kind of protection against rodents fire-proof medium-voltage cable, it comprises two class annealed copper conductors, conductor peripheral hardware semiconductive polyolefin screen, crosslinked polyetylene insulated layer, outer semiconductive polyolefin screen and the conductor screen made of copper of insulating barrier consist of heart yearn, are followed successively by steel-tape armouring protection against rodents layer, the polyolefinic oxygen barrier layer of high flame retardant low smoke, zero halogen, mica fireprotection layer and low smoke, zero halogen polyolefin oversheath after three strands of described heart yearns are provided with successively gluing glass cloth twining package tape and low smoke, zero halogen polyolefin inner sheath outward and are filled with mineral-filled thing.
The utility model oxygen barrier layer adopts the polyolefin can crust under combustion case, this oxygen barrier layer prevents that the importing of heat from playing the effect of protection built-in electrical insulation under fire condition.Fireprotection layer adopts that fire-resistant isinglass belt is wrapped to be formed, and this mica tape can keep preferably intensity in the breaking out of fire situation, oxygen barrier layer is played the protective effect of tightening.This cable is fire-resistant except possessing, the characteristic of mouse bite preventing, also have the characteristics such as low cigarette, Halogen, fire-retardant, waterproof, protection against the tide.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the utility model schematic diagram.
Embodiment
As shown in Figure 1, a kind of protection against rodents fire-proof medium-voltage cable, it comprises two class annealed copper conductors 1, conductor peripheral hardware semiconductive polyolefin screen 2, crosslinked polyetylene insulated layer 3, these insulating barrier 3 outer semiconductive polyolefin screen 4 and conductor screens made of copper 5 consist of heart yearn, are followed successively by steel-tape armouring protection against rodents layer 9, the polyolefinic oxygen barrier layer 10 of high flame retardant low smoke, zero halogen, mica fireprotection layer 11 and low smoke, zero halogen polyolefin oversheath 12 after three strands of described heart yearns are provided with successively gluing glass cloth twining package tape 6 and low smoke, zero halogen polyolefin inner sheath 7 outward and are filled with mineral-filled thing 8.
Technical parameter:
Rated voltage: 3.6/6 kV ~ 26/35kV
Conductor maximum operating temperature: 90 ℃
Cross-sectional area of conductor: 25～500mm
2
Claims (1)
1. protection against rodents fire-proof medium-voltage cable, it comprises two class annealed copper conductors, conductor peripheral hardware semiconductive polyolefin screen, crosslinked polyetylene insulated layer, outer semiconductive polyolefin screen and the conductor screen made of copper of insulating barrier consist of heart yearn, it is characterized in that, be followed successively by steel-tape armouring protection against rodents layer, the polyolefinic oxygen barrier layer of high flame retardant low smoke, zero halogen, mica fireprotection layer and low smoke, zero halogen polyolefin oversheath after three strands of described heart yearns are provided with successively gluing glass cloth twining package tape and low smoke, zero halogen polyolefin inner sheath outward and are filled with mineral-filled thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220221299 CN202662380U (en) | 2012-05-17 | 2012-05-17 | Ratproof refractory medium voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220221299 CN202662380U (en) | 2012-05-17 | 2012-05-17 | Ratproof refractory medium voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202662380U true CN202662380U (en) | 2013-01-09 |
Family
ID=47457268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220221299 Expired - Lifetime CN202662380U (en) | 2012-05-17 | 2012-05-17 | Ratproof refractory medium voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202662380U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318985A (en) * | 2014-10-22 | 2015-01-28 | 安徽环宇电缆集团有限公司 | Fireproof abrasion-resistant antioxidant insulation cable |
| CN107610811A (en) * | 2017-10-18 | 2018-01-19 | 中天科技装备电缆有限公司 | A kind of rat-and-ant proof, high radiating photovoltaic cable and preparation method thereof |
| CN109841329A (en) * | 2019-03-28 | 2019-06-04 | 四川鑫电电缆有限公司 | Fire-resisting cable is pressed in new ceramics low bulk isolated form |
-
2012
- 2012-05-17 CN CN 201220221299 patent/CN202662380U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318985A (en) * | 2014-10-22 | 2015-01-28 | 安徽环宇电缆集团有限公司 | Fireproof abrasion-resistant antioxidant insulation cable |
| CN107610811A (en) * | 2017-10-18 | 2018-01-19 | 中天科技装备电缆有限公司 | A kind of rat-and-ant proof, high radiating photovoltaic cable and preparation method thereof |
| CN109841329A (en) * | 2019-03-28 | 2019-06-04 | 四川鑫电电缆有限公司 | Fire-resisting cable is pressed in new ceramics low bulk isolated form |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 201514 Shanghai city Jinshan District zhenkang Zhangyan Town Road No. 238 Patentee after: Shanghai Qifan cable Limited by Share Ltd Address before: 201504 Shanghai city Jinshan District Zhangyan Town Economic Development Zone Zhang Yan Kang Road No. 238 vibration Patentee before: Shanghai Qifan Electric Wire Electric Cable Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |