CN203085226U - Flame retardation cable - Google Patents
Flame retardation cable Download PDFInfo
- Publication number
- CN203085226U CN203085226U CN 201220695624 CN201220695624U CN203085226U CN 203085226 U CN203085226 U CN 203085226U CN 201220695624 CN201220695624 CN 201220695624 CN 201220695624 U CN201220695624 U CN 201220695624U CN 203085226 U CN203085226 U CN 203085226U
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- spring coil
- cable
- flame retardant
- stainless steel
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Abstract
The utility model provides a flame retardation cable comprising a conductor, a flame retardant coating, a copper band shielding layer, a spring coil protection layer, an inner lining layer, a steel band armoring layer and an outer sheath layer all arranged in sequence from inside-out; the flame retardant coating is six-layer composite mica tape flame retardant coating; the spring coil protection layer is formed by spirally winding nonmagnetic stainless steel wires with a diameter of 1.5-2mm, and a surface of the stainless steel wire is coated with a high temperature resistance heat insulation material formed by nano-ceramics particles and silicate compound; the inner lining layer is formed by high flame retardation cable material composed by a mixture of aluminium hydroxide and magnesium hydroxide, and is a heat insulation layer extruding and wrapping outside the spring coil protection layer; and the outer sheath layer is a low-smoke halogen-free polyolefin sheath layer. The flame retardation cable has good flame retardant property, can bear strong external mechanical impact under fire hazard environment, can ensure integrity of a power supply line in and after the fire hazard, has reliable power supply capacity, hardly generates and discharges poisonous and harmful gas in a cable making process and under the fire hazard condition, and has good environment protection property.
Description
Technical field
The utility model relates to cable, the strong flame retardant cable of particularly a kind of fire resistance.
Background technology
Existing flame retardant cable, its structure normally extrude the flame retardant coating of mineral mixture or potteryization silicon rubber material outside the cable heart, flame retardant coating is surrounded with the steel-tape armouring layer outward, and outermost layer is extruded with the external sheath layer that adopts fire proofing.The cable of said structure has certain refractory ability, and as no external impacts, the cable of this structure is a period of time use of still can switching in fire process and thereafter usually.Its weak point is: in fire generating process and fire extinguishing procedure, inevitably can occur because uncontrollable former cause as cable testing bridge come off, external force factors such as building collapsing or falling object act on the cable, thereby cause damage to cable.And the screen of cable and insulating barrier all are in the high temperature in fire; mechanical performance descends significantly; do not providing under the situation of perfect safeguard measure to cable; if being subjected to bigger external strength, impacts by cable; very easily occur screen and insulating barrier the distortion or break; thereby cause cable to be damaged, can't guarantee the integrality of cable line, make cable lose power supply capacity in fire process or after finishing.
The utility model content
The purpose of this utility model is: overcome the deficiencies in the prior art, provide a kind of fire resistance good, in fire process and fire still can guarantee after finishing circuit integrality, possess the flame retardant cable of reliable power supply capacity.
The technical solution of the utility model is: flame retardant cable of the present utility model, comprise conductor, copper strips screen, steel-tape armouring layer and external sheath layer, and its design feature is: also comprise fireprotection layer, spring coil protective layer and inner covering; Above-mentioned conductor, fireprotection layer, copper strips screen, spring coil protective layer, inner covering, steel-tape armouring layer and external sheath layer are provided with successively from inside to outside; Fireprotection layer is 6 laminated one-tenth mica tape fireprotection layers; The spring coil protective layer is by spiral being entwined of non-magnetic stainless steel silk of 1.5～2mm diameter, and surface of stainless steel wire is coated with the high temperature resistant heat insulation material of being made up of nano ceramics particulate and silicate compound; Inner covering is coated on the thermal insulation layer of the periphery of spring coil protective layer for the high flame-retardant cable material extruding of being made of aluminium hydroxide and magnesium hydroxide mixture; External sheath layer is the low-smoke halogen-free polyolefin restrictive coating.
The utlity model has positive effect: flame retardant cable of the present utility model can bear strong exterior mechanical and impact under fire hazard environment, reaches the integrality that still can guarantee supply line after fire finishes in the fire generating process, possesses reliable power supply capacity; And compare with the PVC insulated cable, in manufacture process and under the fire condition discharging of toxic and harmful few, free from environmental pollution, good environmental protection.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Reference numeral in the above-mentioned accompanying drawing is as follows:
Embodiment
(embodiment 1)
See Fig. 1, the flame retardant cable of present embodiment is made up of conductor 1, fireprotection layer 2, copper strips screen 3, spring coil protective layer 4, inner covering 5, steel-tape armouring layer 6 and external sheath layer 7.
The material of spring coil protective layer 4 is the non-magnetic stainless steel silk of 1.5～2mm diameter, and surface of stainless steel wire is coated with the high temperature resistant heat insulation material of being made up of nano ceramics particulate and silicate compound; The spiral periphery that is wrapped in copper strips screen 3 of stainless steel wire, the gap between screw of stainless steel wire is 1～1.5 times a steel wire diameter, thereby constitutes spring coil protective layer 4 in the periphery of copper strips screen 3.Cause is provided with spring coil protective layer 4, thereby copper strips screen 3 is not contacted with the outer insulative layer of cable, effectively reduces the efficient that outside heat is inwardly transmitted under the cable heated situation.
The material of inner covering 5 is the high flame-retardant cable material that aluminium hydroxide and magnesium hydroxide mixture are formed, and inner covering 5 extruding are coated on the periphery of spring coil protective layer 4.When the cable heated temperature reached more than 240 degrees centigrade, aluminium hydroxide, magnesium hydroxide began to decompose successively, and the hydrone that produces in the decomposable process plays the fire-retardant effect of oxygen barrier.
Steel-tape armouring layer 6 adopts existing steel-tape armouring layer, and steel-tape armouring layer 6 is arranged on the periphery of inner covering 5.
The material of external sheath layer 7 selects for use low smoke and zero halogen environment-friendly polyolefin fire proofing to make, and external sheath layer 7 is coated on the periphery of steel-tape armouring layer 6.
The flame retardant cable of present embodiment is owing to be provided with fireprotection layer 2, spring coil protective layer 4 and the inner covering 5 that mica tape is made; thereby fire-retardant, fire-resistant, the resistance to elevated temperatures of cable are significantly strengthened; therefore; can bear strong exterior mechanical under fire hazard environment impacts; in the fire generating process, reach the integrality that still can guarantee supply line after fire finishes, possess reliable power supply capacity.And external sheath layer 7 adopts the low-smoke halogen-free polyolefin fire proofings, and it is compared with the PVC insulated cable, in manufacture process and under the fire condition discharging of toxic and harmful few, free from environmental pollution, good environmental protection.
Above embodiment is the explanation to embodiment of the present utility model; but not to restriction of the present utility model; person skilled in the relevant technique is under the situation that does not break away from spirit and scope of the present utility model; can also make various conversion and variation and obtain the corresponding technical scheme that is equal to, so all technical schemes that are equal to all should be included into scope of patent protection of the present utility model.
Claims (1)
1. a flame retardant cable comprises conductor (1), copper strips screen (3), steel-tape armouring layer (6) and external sheath layer (7), it is characterized in that: also comprise fireprotection layer (2), spring coil protective layer (4) and inner covering (5); Described conductor (1), fireprotection layer (2), copper strips screen (3), spring coil protective layer (4), inner covering (5), steel-tape armouring layer (6) and external sheath layer (7) are provided with successively from inside to outside; Fireprotection layer (2) is 6 laminated one-tenth mica tape fireprotection layers; Spring coil protective layer (4) is by spiral being entwined of non-magnetic stainless steel silk of 1.5～2mm diameter, and surface of stainless steel wire is coated with the high temperature resistant heat insulation material of being made up of nano ceramics particulate and silicate compound; Inner covering (5) is coated on the thermal insulation layer of the periphery of spring coil protective layer (4) for the high flame-retardant cable material extruding of being made of aluminium hydroxide and magnesium hydroxide mixture; External sheath layer (7) is the low-smoke halogen-free polyolefin restrictive coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695624 CN203085226U (en) | 2012-12-17 | 2012-12-17 | Flame retardation cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695624 CN203085226U (en) | 2012-12-17 | 2012-12-17 | Flame retardation cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203085226U true CN203085226U (en) | 2013-07-24 |
Family
ID=48831043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220695624 Expired - Fee Related CN203085226U (en) | 2012-12-17 | 2012-12-17 | Flame retardation cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203085226U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139915A (en) * | 2015-08-31 | 2015-12-09 | 无锡华虹信息科技有限公司 | Anticorrosion cable with zinc-nickel alloy, and preparation method for anticorrosion cable |
| CN105185452A (en) * | 2015-07-23 | 2015-12-23 | 苏州国华特种线材有限公司 | Novel fireproof cable |
-
2012
- 2012-12-17 CN CN 201220695624 patent/CN203085226U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185452A (en) * | 2015-07-23 | 2015-12-23 | 苏州国华特种线材有限公司 | Novel fireproof cable |
| CN105139915A (en) * | 2015-08-31 | 2015-12-09 | 无锡华虹信息科技有限公司 | Anticorrosion cable with zinc-nickel alloy, and preparation method for anticorrosion cable |
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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 |
Granted publication date: 20130724 Termination date: 20151217 |
|
| EXPY | Termination of patent right or utility model |