CN204991211U - Fire -retardant flexible fireproof cable of low smoke and zero halogen - Google Patents
Fire -retardant flexible fireproof cable of low smoke and zero halogen Download PDFInfo
- Publication number
- CN204991211U CN204991211U CN201520631192.6U CN201520631192U CN204991211U CN 204991211 U CN204991211 U CN 204991211U CN 201520631192 U CN201520631192 U CN 201520631192U CN 204991211 U CN204991211 U CN 204991211U
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- China
- Prior art keywords
- sheath
- low smoke
- zero halogen
- cable
- restrictive coating
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- Expired - Fee Related
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Abstract
The utility model discloses fire -retardant flexible fireproof cable of low smoke and zero halogen, cable conductor including stranded copper stranded conductor, the cable conductor surface covering has the insulating layer, the surface covering of insulating layer has the copper sheath, the surface covering of copper sheath has the restrictive coating, the restrictive coating is the low smoke zero halogen sheath layer. The utility model discloses in, set up the layer into low smoke zero halogen sheath with the restrictive coating outside the copper sheath. On the one hand, inside copper sheath can wrapped up and protect in the low smoke zero halogen sheath layer, and then inside insulating layer and the cable conductor of protection does not receive erosion and damage. On the other hand, the low smoke zero halogen sheath layer is made by sizing material not halogen -containing, that do not contain material such as plumbous cadmium chromium mercury, can not produce a large amount of smog when the burning, also can not release aggressive fume and toxic gas and cause the injury to the human body, has better safety and environmental protection characteristic.
Description
Technical field
The utility model relates to a kind of cable, is specifically related to a kind of low-smoke non-halogen flame-retardant flexible fire-proof cable.
Background technology
Halogen (particularly bromine system) flame-retardant polymer system is because of its outstanding flame retardant effect, and the mid-80 occupied absolute dominant position in the past in ignition resistant polymer markets.Polyvinyl chloride (PVC) in electric wire industrial quarters is namely an example wherein, still in sheath and Insulation Material, carries dominant role so far.Along with the progress of society and the develop rapidly of science and technology, the weakness (a large amount of smog discharged during burning, serious corrosive gas and toxic gas) of PVC inherence is obvious increasingly.
At present, common fireproof cable, its structure is from generally inside and outside: cable conductor, has that strand copper wire is stranded to be formed, and has good flexural property; Insulating barrier, adopts high temperature resistant, incombustible isolation material; Copper sheath, copper material, ensures good flexural property.Restrictive coating, has good anti-corrosion property.Existing fireproof cable, restrictive coating is only generally play physical protection and chemical preservation erosion protection, and wherein often Halogen flame-retardant polymer, has obvious defect.Moreover the material of insulating barrier is varied, at present, be generally divided into organic material and inorganic, in the long term, inorganic has larger advantage in environmental protection and cost.
Utility model content
The purpose of this utility model is the low-smoke non-halogen flame-retardant flexible fire-proof cable providing a kind of environmental protection.
For achieving the above object, the technical solution of the utility model is: low-smoke non-halogen flame-retardant flexible fire-proof cable, comprise the cable conductor of multiply copper stranded conductor, described cable conductor surface coverage has insulating barrier, the surface coverage of described insulating barrier has copper sheath, the surface coverage of described copper sheath has restrictive coating, and described restrictive coating is low smoke and zero halogen restrictive coating.
When adopting technique scheme, in the utility model, the restrictive coating outside copper sheath is set to low smoke and zero halogen restrictive coating.On the one hand, low smoke and zero halogen restrictive coating can wrap up and protect inner copper sheath, and then protects inner insulating barrier and cable conductor do not weather and damage.On the other hand, low smoke and zero halogen restrictive coating is made up of the sizing material of the materials such as not halogen-containing, not leaded cadmium chromium mercury, a large amount of smog can not be produced when burning, also can not discharge corrosive gas and toxic gas damages human body, there is good safety and environmental protection characteristic.
Further, described insulating barrier is mica insulation layer.Adopting incombustible inorganic insulation material to make mica insulation layer, have resistant to elevated temperatures characteristic, can not produce any pernicious gas during burning, more secondary pollution can not occur, and have good insulation property, is real environment-friendly products.
Further, described insulating barrier, copper sheath are identical with the thickness of restrictive coating three.Aborning, identical layer thickness is convenient to designing mould, saves time, and improves the efficiency of processing.
Further, the outer surface of described copper sheath is bellow-shaped.Adopt bellow-shaped, the thickness of copper sheath can be increased on the one hand, improve its physical property.On the other hand, the contact area of copper sheath and restrictive coating can be increased, make it contact more firm.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the schematic cross-section of the utility model low-smoke non-halogen flame-retardant flexible fire-proof cable embodiment.
Accompanying drawing illustrates: cable conductor 1, insulating barrier 2, copper sheath 3, restrictive coating 4.
Embodiment
As shown in Figure 1, the utility model low-smoke non-halogen flame-retardant flexible fire-proof cable, the cable conductor 1 as inner core forms by strand copper wire is stranded, soft, has good conductivity and flexural property.Be adopt the mica insulation layer made of incombustible inorganic insulation material at the outer field insulating barrier of cable conductor 12, there is resistant to elevated temperatures characteristic, during burning, any pernicious gas can not be produced.At the outer field copper sheath 3 of insulating barrier 2, be processed to form bellow-shaped through special, there is good flexural property.And the thickness of copper sheath 2 can be increased, improve its physical property.On the other hand, the contact area of copper sheath 2 and restrictive coating 4 can be increased, make both contacts more firm.Restrictive coating 4 is low smoke and zero halogen restrictive coating, and low smoke and zero halogen material comprises polymer and fire retardant, polymer can select polyethylene, polypropylene, polybutene etc. with and composition thereof.Fire proofing can select magnesium hydroxide, aluminium hydroxide etc., can be formed in different temperature and lose the crystallization water, to adapt to different demands.
The cable of low smoke and zero halogen restrictive coating is used to have following characteristic:
1, tensile strength is larger than general PVC cable: general PVC cable tensile strength is greater than 1.05kgf/mm
2, and low-smoke halogen-free cable tensile strength is greater than 1.2kgf/mm
2;
2, have good weatherability, weather-proof temperature is-30 DEG C ~ 105 DEG C;
3, possess good pliability, case hardness is 80 ~ 90;
4, there is non-moving property, need not plasticizer be added because of in formula for a product for this reason, therefore do not have and move shape property;
5, can not toxic black smoke be produced during burning, only can produce a small amount of white non-toxic smog;
6, there is higher specific insulation: PVC cable is generally 10
12~ 10
15Ω/cm
3, low-smoke halogen-free cable is greater than 10
16Ω/cm
3;
7, there is good high pressure resistant property: general resistance to more than the 10kV of PVC cable, and low-smoke halogen-free cable is up to more than 15kV;
Use the cable major function of low smoke and zero halogen restrictive coating:
1, fire protecting performance is superior, and fire resistance rating is higher than common Halogen cable; Meanwhile, water spray and mechanical impact can also be tolerated in burning;
2, continuous length is long, and its length can meet for electrical length needs, and every root continuous length can reach more than 1000m;
3, cross section is large, and single-core cable cross section can reach 630mm
2, multicore cable can reach 70mm
2;
4, have pliability, cable can coil on dish, and its bending radius is 6 ~ 10D;
5, overload capacity is large, and cable not only ampacity is large, and has larger overload capacity.Will show according to wiring, usual cable surface temperature≤70 DEG C, if wiring is not tangible, when also not contacting with flammable construction material, cable cover(ing) temperature can bring up to 105 DEG C.During overload, fireproof cable Long-term service temperature can reach 250 DEG C;
6, fail safe is good, fireproof cable can in flame normal power supply (when 950 DEG C continuous more than 3 hours normal power supplies), start extinguishing device, reduce fire damage.Copper sheath is excellence conductor, is best earth connection, greatly improves ground protection sensitivity and reliability;
7, long service life, high temperature resistant not easily aging, in normal operation, its useful life is more than 100 years;
8, transport, installation, installation fitting are comparatively simple, are similar to common cable;
9, good economy performance, because manufacture craft is advanced, install simple, under equal conditions its comprehensive cost is low than the expense of mineral insulated cable.
Above-described is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; without departing from the concept of the premise utility; some distortion and improvement can also be made; these also should be considered as protection range of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (4)
1. low-smoke non-halogen flame-retardant flexible fire-proof cable, comprises the cable conductor of multiply copper stranded conductor, and described cable conductor surface coverage has insulating barrier, the surface coverage of described insulating barrier has copper sheath, the surface coverage of described copper sheath has restrictive coating, it is characterized in that, described restrictive coating is low smoke and zero halogen restrictive coating.
2. low-smoke non-halogen flame-retardant flexible fire-proof cable according to claim 1, is characterized in that, described insulating barrier is mica insulation layer.
3. low-smoke non-halogen flame-retardant flexible fire-proof cable according to claim 1, is characterized in that, described insulating barrier, copper sheath are identical with the thickness of restrictive coating three.
4. low-smoke non-halogen flame-retardant flexible fire-proof cable according to claim 1, is characterized in that, the outer surface of described copper sheath is bellow-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520631192.6U CN204991211U (en) | 2015-08-21 | 2015-08-21 | Fire -retardant flexible fireproof cable of low smoke and zero halogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520631192.6U CN204991211U (en) | 2015-08-21 | 2015-08-21 | Fire -retardant flexible fireproof cable of low smoke and zero halogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204991211U true CN204991211U (en) | 2016-01-20 |
Family
ID=55125554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520631192.6U Expired - Fee Related CN204991211U (en) | 2015-08-21 | 2015-08-21 | Fire -retardant flexible fireproof cable of low smoke and zero halogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204991211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108364717A (en) * | 2018-01-29 | 2018-08-03 | 国网天津市电力公司电力科学研究院 | A method of adjusting high voltage power cable insulating layer electric field intensity inside high extreme value |
-
2015
- 2015-08-21 CN CN201520631192.6U patent/CN204991211U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108364717A (en) * | 2018-01-29 | 2018-08-03 | 国网天津市电力公司电力科学研究院 | A method of adjusting high voltage power cable insulating layer electric field intensity inside high extreme value |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20190821 |