CN109801755A - A kind of 6 ~ 35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable - Google Patents
A kind of 6 ~ 35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable Download PDFInfo
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- CN109801755A CN109801755A CN201910267009.1A CN201910267009A CN109801755A CN 109801755 A CN109801755 A CN 109801755A CN 201910267009 A CN201910267009 A CN 201910267009A CN 109801755 A CN109801755 A CN 109801755A
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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 invention discloses a kind of 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cables, the cable includes more metallic conductors, its every metallic conductor is successively coated with composite insulation layer, waterproof buffer layer and metal screen layer, wherein composite insulation layer is collectively constituted by conductor shield, insulating layer and three layers of insulation screen, further include the wrapping layer that more metallic conductors are coated togather, waterproof layer, armor and oversheath are successively coated with outside the wrapping layer.The cable has excellent waterproof and dampproof performance, and excellent fireproof performance.
Description
Technical field
The present invention relates to power cable technical fields, and in particular to a kind of 6~35kV of voltage rating polypropylene insulation Halogen
Low-smoke fireproof cable.
Background technique
With the continuous progress of society, the raising of living standards of the people, people are increasingly heavier to the safety in life
Depending on, but people, while pursuing high-quality life, enjoying the clusterings such as emporium, grand theater life, fire safety is also more next
More important and urgent, comprehensive each conflagration is reported, wherein the spontaneous combustion of wire and cable and the fire that causes accounts for significant proportion,
And cause the ratio of personnel itself injures and deaths also to occupy very big ratio because of the reason of wire and cable again in fire, for example, fiery
Power transmission, which occurs, for the wire and cable that the calamity time very short after occurring bears power transmission interrupts, and causes elevator, illumination cannot be just
Often work, and so that people is tried in any path one could without heeding which one chose and cause injures and deaths.
At present fire-resisting cable application range it is extensively, such as: TV station, hospital, cinema, mall, subway, tunnel, railway,
Airport, station, large-scale Public Physical Education, public place of entertainment, large supermarket, hotel, skyscraper, military installations, nuclear power station, coal
Mine, chemical industry, medicine, steel, metallurgy, ship, civilian etc..
The structure that usual fire-resisting cable uses is wrapped mica tape, and not only production efficiency is low, and control difficulty is big, quality
Reliability is low, and mica tape cannot bear excessively high voltage.Mica tape will around conductive surface, however midium voltage cable insulation and
Smooth rounding is wanted at interface between conductor, is had one layer to extrude semi-conductive layer, is prevented partial discharge amount excessive, if Mica tape existed
Conductive surface, it will cause cable local discharge amount exceeded, critical defect occur.
In addition, being hardened after mica tape burning, embrittlement, it is easy to fall off.
According to investigations, with the development of skyscraper with the raising of fire-protection rating and the reinforcement of people's awareness of safety, it is middle pressure it is resistance to
Thermoelectricity cable comes into being, and dosage also increases sharply, but currently without it is middle pressure fire-resisting cable country and professional standard and in
Press fire resistance test method standard, external also not similar product standard and test method standard, and voltage rating 0.6/1kV and
During low-voltage cable fire resistance test method standard GB/T19216.21/IEC 60331-21:1999 below cannot accurately reflect
The fire-resistance property of voltage cable.
Summary of the invention
In order to overcome the above technical defects, the present invention provides a kind of 6~35kV of voltage rating polypropylene insulation Halogen is low
Fume fire resistant cable, the cable have excellent waterproof and dampproof performance, and excellent fireproof performance.
In order to reach above-mentioned technical effect, the present invention provides a kind of 6~35kV of voltage rating polypropylene insulation Halogen is low
Fume fire resistant cable, the cable include more metallic conductors, and it is slow that every metallic conductor is successively coated with composite insulation layer, waterproof
Layer and metal screen layer are rushed, wherein composite insulation layer is collectively constituted by conductor shield, insulating layer and three layers of insulation screen, also
Waterproof layer, armor and outer are successively coated with including the wrapping layer that more metallic conductors are coated togather, outside the wrapping layer
Sheath.
Further technical solution is that the insulating layer uses polypropylene material, the conductor shield and insulation shielding
Layer is made of polypropylene and conductive black mixing, and the conductor shield, insulating layer and insulation screen squeeze out be coated on simultaneously
Metallic conductor surface, and bonded between three layers close.
Further technical solution is that the waterproof buffer layer is that wrapped one layer of semiconductive resistance is overlapped outside insulation screen
Water expansion buffer band, overlapping overlap rate are 20%.
Further technical solution is that the metal screen layer is to be overlapped using annealed copper band around waterproof buffer layer
Outside, it is overlapped overlap rate 15%.
Further technical solution is that the wrapping layer is led using two layers of waterstop overlapping around the twisted metal contracted
In vitro.
Further technical solution is that the waterproof layer is polypropylene waterproof layer.
Further technical solution is, the armor is using the double-deck steel-tape armouring, and it is swollen to block water in steel band internal layer longitudinal wrap
Expansible band, wrapped block water of outer layer expand band.
Further technical solution is that the oversheath uses halogen-free and low-smoke flame-retardant polyolefin material.
In the present invention, metallic conductor is strands circle type structure, and is all made of molded line and is twisted, appearance rounding, electricity
Resistance rate is far below standard specified value, and electric conductivity is excellent.Composite insulation layer is total to by conductor shielding, insulating layer, three layers of insulation shielding
With composition, insulating layer uses polypropylene, and conductor shielding and insulation shielding are mixed with conductive black by polypropylene and formed, conductor screen
It covers, insulating layer, insulation shielding while extrusion are coated on conductive surface, and bond closely between three layers.Extrusion process does not need height
Warm high pressure vulcanization, it is energy saving, and the exhaust gas without chemical reaction generates, environmental sound.Wrapped one is overlapped outside insulation shielding
Layer semiconductive blocks water expansion buffer band, is overlapped overlap rate 20%, and it is vertical to can effectively prevent moisture up to 7~10 times for expansion rate of water absorption
To sprawling.Metal screen layer is overlapped outside waterproof buffer layer using annealed copper band, is overlapped overlap rate 15%, can effectively be prevented
Ground protection of the electric field to extraneous interference, when at the same time as cable fault.After metallic conductor is using three metallic shields
Cable core twisted synthesizing cable, filling blocks water snub rope between cable core, and wrapped wrapped using two layers of waterstop overlapping, which can effectively prevent
Moisture is longitudinally spread.A layer polypropylene waterproof layer is extruded after stranding, can be prevented inside moisture radial penetration to cable core, is prevented simultaneously
Only armouring tape or external sharp objects damage cable core.For the cable for needing buried-pipe laying, using the double-deck steel-tape armouring, and
Steel band internal layer longitudinal wrap, which blocks water, expands band, and wrapped block water of outer layer expands band, then can be used as longitudinal waterproof layer after oversheath damage.Outer shield
Jacket layer use low-heat burst size the termite-proof halogen-free and low-smoke flame-retardant polyolefin material of protection against rodents, this kind of material have protection against rodents it is termite-proof,
Low cigarette, Halogen, fire-retardant characteristic, while Heat liberation unit is low when the material combustion, is not easy the surrounding articles that ignite, more safety can
It leans on.
In conclusion the invention has the following beneficial effects: that the cable can carry out acid and alkali-resistance laying, there is excellent waterproof
Performance does not influence insulation resistance, humidity resistance is excellent, and water tree resistant property is excellent, dielectric properties and height for a long time and contact with moisture
It frequency insulating properties and is not influenced by humidity, more reliable guarantee is provided power supply line.Also there is good flame retardant property and can be with
High temperature resistant, high temperature resistant is up to 105~120 DEG C, and current-carrying capacity can promote 15% or more, and Heat liberation unit is low when its burning, is not easy to draw
Surrounding articles are fired, light transmittance is not less than 60% when burning, and the halogen acid gas escaped quantity of generation is not more than 5mg/g, emergent gas PH
Value is not less than 4.3, and conductivity is not more than 10 μ S/mm.Cable material therefor is green material, can be recycled and recycles.
Detailed description of the invention
Fig. 1 is the schematic cross-section of cable of the invention；
Wherein, 1- metallic conductor, 2- conductor shield, 3- insulating layer, 4- insulation screen, 5- waterproof buffer layer, 6- gold
Belong to shielded layer, 7- wrapping layer, 8- waterproof layer, 9- armor, 10- oversheath.
Specific embodiment
Embodiment 1
As shown in Figure 1, the present invention provides a kind of 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable,
The cable includes more metallic conductors, and every metallic conductor is successively coated with composite insulation layer, waterproof buffer layer and metal
Shielded layer, wherein composite insulation layer is collectively constituted by conductor shield, insulating layer and three layers of insulation screen, further includes by more
The wrapping layer that metallic conductor is coated togather, the wrapping layer are successively coated with waterproof layer, armor and oversheath outside.It is described exhausted
Edge layer is made of using polypropylene material, the conductor shield and insulation screen polypropylene and conductive black mixing, described
Conductor shield, insulating layer and insulation screen squeeze out be coated on metallic conductor surface simultaneously, and bond between three layers close.Institute
Stating waterproof buffer layer is to be overlapped wrapped one layer of semiconductive outside insulation screen to block water expansion buffer band, and overlapping overlap rate is
20%.The metal screen layer is the overlapping overlap rate 15% using the overlapping of annealed copper band outside waterproof buffer layer.It is described around
Covering is using two layers of waterstop overlapping outside the twisted metallic conductor contracted.The waterproof layer is polypropylene waterproof layer.Institute
Armor is stated using the double-deck steel-tape armouring, and blocks water in steel band internal layer longitudinal wrap and expands band, wrapped block water of outer layer expands band.It is described outer
Sheath uses halogen-free and low-smoke flame-retardant polyolefin material.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art
Member can be designed that a lot of other modification and implementations, these modifications and implementations will fall in principle disclosed in the present application
Within scope and spirit.
Claims (8)
1. a kind of 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable, which is characterized in that the cable includes more
Metallic conductor, every metallic conductor is successively coated with composite insulation layer, waterproof buffer layer and metal screen layer, wherein compound
Insulating layer is collectively constituted by conductor shield, insulating layer and three layers of insulation screen, further includes being coated on more metallic conductors
Wrapping layer together, the wrapping layer are successively coated with waterproof layer, armor and oversheath outside.
2. 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable according to claim 1, feature exist
In the insulating layer is mixed using polypropylene material, the conductor shield and insulation screen by polypropylene and conductive black
Composition, the conductor shield, insulating layer and insulation screen squeeze out be coated on metallic conductor surface simultaneously, and glue between three layers
It is bolted close.
3. 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable according to claim 1, feature exist
It is to be overlapped wrapped one layer of semiconductive outside insulation screen to block water expansion buffer band in, the waterproof buffer layer, is overlapped overlap rate
It is 20%.
4. 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable according to claim 1, feature exist
In the metal screen layer is the overlapping overlap rate 15% using the overlapping of annealed copper band outside waterproof buffer layer.
5. 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable according to claim 1, feature exist
In the wrapping layer is using two layers of waterstop overlapping outside the twisted metallic conductor contracted.
6. 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable according to claim 1, feature exist
In the waterproof layer is polypropylene waterproof layer.
7. 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable according to claim 1, feature exist
In the armor is blocked water in steel band internal layer longitudinal wrap using the double-deck steel-tape armouring and expanded band, and wrapped block water of outer layer expands band.
8. 6~35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable according to claim 1, feature exist
In the oversheath uses halogen-free and low-smoke flame-retardant polyolefin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267009.1A CN109801755A (en) | 2019-04-03 | 2019-04-03 | A kind of 6 ~ 35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267009.1A CN109801755A (en) | 2019-04-03 | 2019-04-03 | A kind of 6 ~ 35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable |
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| Publication Number | Publication Date |
|---|---|
| CN109801755A true CN109801755A (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910267009.1A Pending CN109801755A (en) | 2019-04-03 | 2019-04-03 | A kind of 6 ~ 35kV of voltage rating polypropylene insulation halide-free low-smoke fireproof cable |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2658913Y (en) * | 2003-08-29 | 2004-11-24 | 新疆特变电工股份有限公司 | Water proof antimouse, fire resistant, low smoke, low bittern power cable |
| CN202905278U (en) * | 2012-11-29 | 2013-04-24 | 安徽新亚特电缆集团有限公司 | Novel middle-voltage fireproof power cable |
-
2019
- 2019-04-03 CN CN201910267009.1A patent/CN109801755A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2658913Y (en) * | 2003-08-29 | 2004-11-24 | 新疆特变电工股份有限公司 | Water proof antimouse, fire resistant, low smoke, low bittern power cable |
| CN202905278U (en) * | 2012-11-29 | 2013-04-24 | 安徽新亚特电缆集团有限公司 | Novel middle-voltage fireproof power cable |
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