CN205595115U - Compound flame retardant coating essence safe fire prevention cable - Google Patents
Compound flame retardant coating essence safe fire prevention cable Download PDFInfo
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- CN205595115U CN205595115U CN201620356410.4U CN201620356410U CN205595115U CN 205595115 U CN205595115 U CN 205595115U CN 201620356410 U CN201620356410 U CN 201620356410U CN 205595115 U CN205595115 U CN 205595115U
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Abstract
The utility model discloses a compound flame retardant coating essence safe fire prevention cable belongs to wire and cable technical field. The utility model discloses a compound flame retardant coating essence safe fire prevention cable, including cable core, crowded package the cable core outside can ceramicization polyolefin inner sheath, weave the metallic braid the inner sheath outside and crowd the fire -retardant oversheath that wraps outside the metallic braid, wherein the cable core form by the transposition of many insulation core, insulation core by interior outside to in proper order by conductor, mica around the covering, can form on ceramicization polyolefin extruded insulation layer. The utility model discloses a compound flame retardant coating essence safe fire prevention cable, mainly used rated voltage 0.61kV and following electric power, control and for instrument system fireproof cable, this cable has excellent electric transmission and mechanical physical properties, still has reliable fire prevention, fire -resistant characteristic, can satisfy oil, chemical industry, metallurgy, fire control, medical treatment and other to the requirement with the fireproof cable of fire protection requirement higher basis, civilian installations field.
Description
Technical field
This utility model relates to technical field of electric wires and cables, especially composite fire layer essential safety fireproof cable.
Background technology
Being in the needs of public safety, all of engineering construction all must take into the demand of fire protection design, some important industries, facility as national in oil, chemical industry, medical treatment, warehouse, shopping plaza etc., even can be to fire protection design harshness to ultimate attainment.As the indispensable electric wire of engineering construction, its fire prevention demand has write into architectural fire-protection methods specification already.
Fire safety not only needs to improve safety consciousness, and fire protection design and the reliable fireproofing installation of science are even more important.It is known that, why the fire protecting performance of electric wire is paid attention to by building trade, it is because: in the principal element causing fire, the fire caused because electric wire is on fire occupies bigger proportion, particularly some fire fighting devices, often when fire occurs, because the inefficacy of cable causes normally starting, finally lead to miserable fire incident.Therefore, the fire safety grade inherently improving electric wire is very important.
At present, cable industry has much about the solution of fireproof cable, but there are two kinds of phenomenons, or relatively costly, and manufacture difficulty is relatively big, is not suitable for long length batch production, also by bigger restriction in application, such as inorganic insulation fireproof cable；Fire safety index is had a greatly reduced quality, particularly the fireproof cable of small bore conductor, remains a great problem of cable industry.
Chinese utility model patent (number of patent application: 2013200508999) discloses a kind of novel rail LSOH anti-flaming fireproof power cable, insulation, oxygen barrier layer, oversheath all use Ceramic silicon rubber to extrude and form, compare the fireproof cable of mica wrapping tape flame retardant coating, fire resistance is not preponderated, but also there is the shortcoming that production efficiency is low, manufacturing cost is high.
Summary of the invention
The purpose of this utility model is: for problem set forth above, composite fire layer essential safety fireproof cable is provided, it is mainly used in rated voltage 0.6/1kV and following electric power, control and instrument system fireproof cable, this cable has reliably fire prevention, fire-resistance property, can meet oil, chemical industry, metallurgy, fire-fighting, medical treatment and other are to the higher basis of fire protection requirement, the requirement of civilian installation field fireproof cable.
The technical solution of the utility model is as follows:
Composite fire layer essential safety fireproof cable of the present utility model, described cable includes cable core, the inner sheath being extruded in outside cable core, the metal armor layers being arranged on outside inner sheath and the oversheath being extruded in outside metal armor layers, wherein said cable core is formed by many insulated wire cores are stranded, and described insulated wire cores is followed successively by conductor, Muscovitum lapping layer and insulating barrier from inside to outside.
Due to said structure, thering is provided rated voltage is 0.6/1kV composite fire layer essential safety fireproof cable, cable is made to have fire prevention, fire-resistance property reliably, thoroughly solve the fireproof construction design challenges of small bore conductor, oil, chemical industry, metallurgy, fire-fighting, medical treatment and other requirements to field fireproof cables such as the higher basis of fire protection requirement, civilian installations can be met.
Composite fire layer essential safety fireproof cable of the present utility model, described Muscovitum lapping layer uses multilamellar microgap wrapped, and the clearance rate of every layer controls 0～3%.
Due to said structure, Muscovitum lapping layer can be made more smooth, at utmost reduce around Inter-packet gap, make between flame retardant coating and conductor more consolidation, it is to avoid cable under flame condition because of between conductor and flame retardant coating air expansion cause flame retardant coating to destroy.
Composite fire layer essential safety fireproof cable of the present utility model, described insulating barrier uses and can extrude and form by ceramic polyolefin.
Due to said structure, can ceramic polyolefin extruded insulation layer except can meet cable under normal operating conditions to the electric property of insulating barrier and the requirement of physical and mechanical properties in addition to, can porcelainization crust under flame condition, insulating barrier is made to become the insulation of tubulose solid-state ceramic, it is coated on the outer layer of mica layer and blocks flame, avoid thermal-flame direct ablation Muscovitum lapping layer, prevent cable insulation core from causing mica sheet to come off after being destroyed by thermal-flame because of the fibrous layer of mica tape and losing fire resistance, so that it is guaranteed that the integrity that flame retardant coating is under thermal-flame, the problem thoroughly solving the small bore fire-resistant reliability of conductor fireproof cable, this inherently improves the fire resistance of composite fire layer essential safety fireproof cable.Additionally, can ceramic polyolefin with at present conventional electric wire plastics (such as PVC, PE etc.), production technology is simple, use common low temperature extruding machine can meet production requirement, production efficiency is high, low cost of manufacture, high-performance, low cost benefit highly significant.
Composite fire layer essential safety fireproof cable of the present utility model, described inner sheath uses and can extrude and form by ceramic polyolefin.
Due to said structure, can ceramic polyolefin extrude inner sheath with can the mechanism of ceramic polyolefin extruded insulation layer the same, can crust with porcelainization under flame condition, inner sheath is made to become tubulose solid-state ceramic inner sheath, it is coated on outside cable core, thermal-flame direct ablation cable core can be avoided, destroy insulated wire cores, improve cable fire index further.Additionally, with can the processing technique of ceramic polyolefin extruded insulation layer the same, use common low temperature extruding machine can meet production requirement, production efficiency is high, low cost of manufacture, high-performance, low cost benefit highly significant.
Composite fire layer essential safety fireproof cable of the present utility model, described metal armor layers can be selected for that metal tape is wrapped or tinsel is wound around or a kind of armouring mode in metal wire knitted or corrugated metal four kinds of armouring modes of set or the combination of multiple armouring mode.
Due to said structure, metal armor layers is in addition to can improving the destructiveness of cable tolerance external force, especially it is remarkably improved the creep resistance under thermal-flame operating mode of the nonmetal structure unit of cable, especially can reduce can ceramic extruded insulation layer and can ceramic inner sheath crust during compactedization deformation, maintenance construction of cable stability under the conditions of thermal-flame.
Composite fire layer essential safety fireproof cable of the present utility model, described oversheath is extruded by halogen-free low-smoke flame retardant material and forms, and its oxygen index (OI) should be not less than 34.
Due to said structure, use halogen-free low-smoke flame retardant material to extrude oversheath and can stop cable cover(ing) under the conditions of thermal-flame, discharge poisonous halogen acid gas, reduce the amount of being fuming.Oxygen index (OI) should be greatly improved the ignition point of cable cover(ing) not less than 34, and that reduces flame prolongs fuel efficiency rate.
In sum, the beneficial effects of the utility model are:
Composite fire layer essential safety fireproof cable, by Muscovitum lapping layer, can ceramic polyolefin extruded insulation layer, the composite fire layer that inner sheath is constituted can be extruded by ceramic polyolefin, comparing simple that use Muscovitum lapping layer or simple employing can the fire-resisting cable of ceramic material extruded insulation layer, significantly improve fire-resistant index, particularly substantially improve the fire resistance of fire-resistant cable with small cross section.Such as, the simple fire-resisting cable using Muscovitum lapping layer, Muscovitum lapping layer is relatively thin, and easily come off under flame condition, it is difficult to ensure that the integrity of flame retardant coating, serious will cause fire-resistant index the most up to standard, the especially fire-resisting cable of small bore, and relatively thin Muscovitum lapping layer is difficult to solve the difficult problem that conductor is fused by high temperature.And use merely can the fire-resisting cable of ceramic material extruded insulation layer, owing to can the main component of ceramic material be the mixture of high molecule plastic and ceramics, internal structure after pate dure is micropore shape, almost can lose insulating properties, can have a strong impact on the electric transmission performance of cable.This utility model use by Muscovitum lapping layer and can the composite fire layer that constitutes of ceramic polyolefin extruded insulation layer, the advantage both having had both concurrently, the shortcoming having abandoned again both, is the fire-resisting cable solution of a kind of innovation.
Composite fire layer essential safety fireproof cable, compare can Ceramic silicon rubber, can ceramic polyolefin use common low temperature extruding machine can meet production requirement, processing technique is simple, production efficiency is high, be suitable for batch production, there is preferable economic benefit.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of embodiment of the present utility model.
Description of reference numerals: conductor-1, Muscovitum lapping layer-2, insulating barrier-3, inner sheath-4, metal armor layers-5, oversheath-6.
Detailed description of the invention
Below according to Figure of description detailed description specific embodiment of the utility model:
Composite fire layer essential safety fireproof cable, described cable includes cable core, the inner sheath 4 being extruded in outside cable core, the metal armor layers 5 being arranged on outside inner sheath 4 and the oversheath 6 being extruded in outside metal armor layers, wherein said cable core is formed by many insulated wire cores are stranded, and described insulated wire cores is followed successively by conductor 1, Muscovitum lapping layer 2, insulating barrier 3 from inside to outside.Described Muscovitum lapping layer 2 uses multilamellar microgap wrapped, and the clearance rate of every layer controls 0～3%.Described insulating barrier 3 uses and can extrude and form by ceramic polyolefin.Described inner sheath 4 uses and can extrude and form by ceramic polyolefin.Described metal armor layers 5 can be selected for that metal tape is wrapped or tinsel is wound around or a kind of armouring mode in metal wire knitted or corrugated metal four kinds of armouring modes of set or the combination of multiple armouring mode.Described oversheath 6 is extruded by halogen-free low-smoke flame retardant material and forms, and its oxygen index (OI) should be not less than 34.
Composite fire layer essential safety fireproof cable, specifically comprises the following steps that
Step 1, wire drawing, the copper wire of required external diameter made by the copper bar first buying returned through one or multi-channel wire-drawing process.
Step 2, twisted wire, the copper wire using step 1 to obtain is stranding into conductor 1.
Step 3, wrapped, the outer wrapped mica tape of conductor 1 obtained in step 2 forms Muscovitum lapping layer 2, and the wrapped number of plies is at least 2 layers, uses microgap wrapped around packet mode, and the clearance rate of every layer controls 0～3%.
Step 4, insulation extrudes, and extrudes and ceramic polyolefin insulation layer 3 can obtain insulated wire cores outside the Muscovitum lapping layer 2 that step 3 is formed.
Step 5, stranding, insulated wire cores step 4 obtained is twisted into cable core.
Step 6, inner sheath extrudes, and extruding outside step 5 obtains cable core can ceramic polyolefin inner sheath 4.
Step 7, metal armouring, arranging metal armor layers 5 outside the inner sheath 4 that step 6 obtains, metal armor layers 5 can be selected for that metal tape is wrapped or tinsel is wound around or a kind of armouring mode in metal wire knitted or corrugated metal four kinds of armouring modes of set or the combination of multiple armouring mode.
Step 8, oversheath extrudes, and extruding oxygen index (OI) outside the metal armor layers 5 that step 7 obtains should obtain oversheath 6 by the halogen-free low-smoke flame retardant material not less than 34, ultimately forms finished cable.
Beneficial effect: this utility model significantly improves fire-resistant index, particularly substantially improves the fire resistance of fire-resistant cable with small cross section, and processing technique is simple, production efficiency is high, is suitable for batch production, has preferable economic benefit.
Claims (4)
1. composite fire layer essential safety fireproof cable, it is characterized in that: described cable includes cable core, the inner sheath being extruded in outside cable core, the metal armor layers being arranged on outside inner sheath and the oversheath being extruded in outside metal armor layers, wherein said cable core is formed by many insulated wire cores are stranded, and described insulated wire cores is followed successively by conductor, Muscovitum lapping layer and insulating barrier from inside to outside.
2. composite fire layer essential safety fireproof cable as claimed in claim 1, described Muscovitum lapping layer uses multilamellar microgap wrapped, and the clearance rate of every layer controls 0～3%.
3. composite fire layer essential safety fireproof cable as claimed in claim 1, described insulating barrier uses and can extrude and form by ceramic polyolefin.
4. composite fire layer essential safety fireproof cable as claimed in claim 1, described inner sheath uses and can extrude and form by ceramic polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620356410.4U CN205595115U (en) | 2016-04-26 | 2016-04-26 | Compound flame retardant coating essence safe fire prevention cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620356410.4U CN205595115U (en) | 2016-04-26 | 2016-04-26 | Compound flame retardant coating essence safe fire prevention cable |
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| CN205595115U true CN205595115U (en) | 2016-09-21 |
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| CN201620356410.4U Active CN205595115U (en) | 2016-04-26 | 2016-04-26 | Compound flame retardant coating essence safe fire prevention cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281224A (en) * | 2018-02-28 | 2018-07-13 | 江苏华鹏电缆股份有限公司 | A kind of aluminum alloy sheath fireproof cable |
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2016
- 2016-04-26 CN CN201620356410.4U patent/CN205595115U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281224A (en) * | 2018-02-28 | 2018-07-13 | 江苏华鹏电缆股份有限公司 | A kind of aluminum alloy sheath fireproof cable |
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Address after: 238339 Anhui city of Wuhu province Wuwei County high tech Industrial Park High Road No. 18 Patentee after: Anhui Shangwei Cable Co., Ltd. Address before: 238339 Anhui city of Wuhu province Wuwei County high tech Industrial Park High Road No. 18 Patentee before: Anhui Star Cable Co., Ltd. |