CN204303399U - Flexible cable is pressed in low smoke halogen-free fire retardant fire resistant - Google Patents

Flexible cable is pressed in low smoke halogen-free fire retardant fire resistant Download PDF

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Publication number
CN204303399U
CN204303399U CN201420859864.4U CN201420859864U CN204303399U CN 204303399 U CN204303399 U CN 204303399U CN 201420859864 U CN201420859864 U CN 201420859864U CN 204303399 U CN204303399 U CN 204303399U
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CN
China
Prior art keywords
flexible cable
low smoke
smoke halogen
fire resistant
fire retardant
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Expired - Fee Related
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CN201420859864.4U
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Chinese (zh)
Inventor
王振金
刘瑞莲
李华斌
张公卓
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Hunan Valin Wire and Cable Co Ltd
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Hunan Valin Wire and Cable Co Ltd
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Priority to CN201420859864.4U priority Critical patent/CN204303399U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to technical field of electric wires and cables, particularly relate in a kind of low smoke halogen-free fire retardant fire resistant and press flexible cable, it is characterized in that: comprise conductor, described conductor be provided with screen in semiconductor outward successively, insulating barrier, semiconductor shield outward, metallic shield formation insulated wire cores; Phase-change temperature control layer, Ceramic silicon rubber thermal insulation layer, the wrapped flame retardant bed of mica, restrictive coating is provided with successively in described insulated wire cores outside.The utility model structure is simple, and insulating barrier adopts the ethylene-propylene rubber bearing high temperature in certain hour, compares that insulation when conventional crosslinked polyethylene can not produce high temperature is softening, drip melt causes short circuit.

Description

Flexible cable is pressed in low smoke halogen-free fire retardant fire resistant
Technical field
The utility model relates to technical field of electric wires and cables, particularly relates in a kind of low smoke halogen-free fire retardant fire resistant and presses flexible cable.
Background technology
Along with the development of society, electrified level not section increases, and electric power increases greatly, and the place application low-voltage cable transmission of electricity of the dense population areas such as market, hotel, track dealings cannot meet.Gradually adopt midium voltage cable to transmit electricity to replace.And these place safety require high especially, cable needs low smoke halogen-free fire retardant fire resistant mostly, and the environmental impact that lays had also needs bending radius little, such as: track dealings cable often needs bending radius to reach 6 times of cable sizes.These requirements all have good method to meet at traditional low-voltage cable.But will to be solved prior art also immature for fire-resistant and soft problem in midium voltage cable simultaneously.Difficulty be midium voltage cable because of need conductor screen guarantee office to put will to reach fire-resistant cannot on conductor direct bag mica tape.Usually be effective by the temperature of back-fire relief, heat insulation guarantee insulation.Mainly experienced by two stages: the first stage adopts steel band back-fire relief+layer thermal insulation layer or inorganic mineral fire-resistant layer structure to ensure that the temperature of insulation is effective in the resistance to ignition technique of middle pressure.Such as: Chinese patent CN1480958; CN2837993.This kind of cable all have employed steel-tape armouring or inorganic mineral layer makes the bending radius of cable up to more than 20 times of outside diameters of cable.Second stage adopts ceramic silicon rubber as fire-resistant, thermal insulation layer.Such as: CN101169993A, CN102394121A, CN201975130U etc., such cable has certain flexibility in normal condition, Cable Bending Radius can be made to reach 12 times of cable sizes, but be that 6 times of cable size differences are also far away because adopting the structure such as crosslinked polyethylene and steel band shielding to make cable will reach bending radius.Such cable is not enough to cable internal protection under oxy combustion environment in addition, often causes over-heat inside to make crosslinked polyetylene insulated drip melt cause short circuit.
Therefore, not yet occur up to now can bending radius reach 6 times of cable sizes really bending environment press fire-resisting flexible cable in using.
Summary of the invention
The purpose of this utility model is the deficiency overcoming above-mentioned technology, and provides in a kind of low smoke halogen-free fire retardant fire resistant and press flexible cable, and flexibility is good, and anti-fire capability is strong, can protect spy's long period safe power supply.
The utility model for achieving the above object, by the following technical solutions: in a kind of low smoke halogen-free fire retardant fire resistant, press flexible cable, it is characterized in that: comprise conductor, described conductor be provided with screen in semiconductor outward successively, insulating barrier, semiconductor shield outward, metallic shield formation insulated wire cores; Phase-change temperature control layer, Ceramic silicon rubber thermal insulation layer, the wrapped flame retardant bed of mica, restrictive coating is provided with successively in described insulated wire cores outside.
Described insulated wire cores is single insulated wire cores or the three insulated wire cores compound inslation core by stranded formation.
What described insulating barrier adopted is ethylene propylene rubber insulated.
Screen, insulating barrier in described semiconductor, semiconductor shields outward is a logical three-layer co-extruded extrusion molding; And inside and outside screen used is rubber-type semiconductive material.
Described metallic shield is that copper wire is dredged around formation.
What described phase-change temperature control layer adopted is the solid-solid phase transition material of a kind of phase transition temperature at 160-180 degree.Extrude one deck phase-change temperature control layer outside insulated wire cores or outside stranding, this material undergoes phase transition and absorbs a large amount of heat guarantee internal temperatures not higher than 180 degree 180 degree time.
What described Ceramic silicon rubber thermal insulation layer adopted is a kind of Ceramic silicon rubber that can become rapidly hull shape face ceramic-like thermal insulation layer at 800-1000 degree temperature.Outside phase-change temperature control layer, extrude Ceramic silicon rubber thermal insulation layer, material high temperature when fire occurs of this structure sheaf causes ceramic, forms ceramic-like housing, plays heat insulation, back-fire relief effect.
What the wrapped flame retardant bed of described mica adopted is calcine the glass fibre belt that mica is coating.Back-fire relief effect is played at the outer wrapped mica tape of ceramic silicon rubber layer.
Described conductor is six class copper conductors of GB/T3956 regulation.
Described restrictive coating is that fire-retardant EVA elastomer extrudes formation.
The beneficial effects of the utility model are: the utility model structure is simple, and insulating barrier adopts the ethylene-propylene rubber bearing high temperature in certain hour, compare that insulation when conventional crosslinked polyethylene can not produce high temperature is softening, drip melt causes short circuit.
Extrude one deck phase-change temperature control layer outside insulated wire cores or outside stranding, this material undergoes phase transition and absorbs a large amount of heat guarantee internal temperatures not higher than 180 degree 180 degree time.Outside phase-change temperature control layer, extrude Ceramic silicon rubber thermal insulation layer, material high temperature when fire occurs of this structure sheaf causes ceramic, forms ceramic-like housing, plays heat insulation, back-fire relief effect.Back-fire relief effect is played at the outer wrapped mica tape of ceramic silicon rubber layer.
Accompanying drawing explanation
Fig. 1 presses single core fire-resisting flexible cable structural representation in the utility model;
Fig. 2 presses three core fire-resisting flexible cable structural representations in the utility model.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing and preferred embodiment.The utility model grouping sheet core and multiclass two situations: tool is as follows in implementation process: as depicted in figs. 1 and 2, presses flexible cable in a kind of low smoke halogen-free fire retardant fire resistant, comprises conductor 1, the six class copper conductors that described conductor 1 specifies for GB/T3956.Described conductor is provided with screen 2 in semiconductor outward successively, insulating barrier 3, semiconductor shield 4 outward, metallic shield 5 forms insulated wire cores; Described insulated wire cores is single insulated wire cores or the three insulated wire cores compound inslation core by stranded formation.What described insulating barrier 3 adopted is ethylene propylene rubber insulated.Described metallic shield 5 for copper wire dredge around formation.
Phase-change temperature control layer 6, Ceramic silicon rubber thermal insulation layer 7, the wrapped flame retardant bed 8 of mica, restrictive coating 9 is provided with successively in described insulated wire cores outside.What described phase-change temperature control layer 6 adopted is the solid-solid phase transition material of a kind of phase transition temperature at 160-180 degree.Extrude one deck phase-change temperature control layer outside insulated wire cores or outside stranding, this material undergoes phase transition and absorbs a large amount of heat guarantee internal temperatures not higher than 180 degree 180 degree time.What described Ceramic silicon rubber thermal insulation layer 7 adopted is a kind of Ceramic silicon rubber that can become rapidly hull shape face ceramic-like thermal insulation layer at 800-1000 degree temperature.Outside phase-change temperature control layer, extrude Ceramic silicon rubber thermal insulation layer, material high temperature when fire occurs of this structure sheaf causes ceramic, forms ceramic-like housing, plays heat insulation, back-fire relief effect.What the wrapped flame retardant bed 8 of described mica adopted is calcine the glass fibre belt that mica is coating.Back-fire relief effect is played at the outer wrapped mica tape of ceramic silicon rubber layer.Described restrictive coating 9 extrudes formation for fire-retardant EVA elastomer.
It is logical three-layer co-extruded extrusion moldings that the interior screen 2 of described semiconductor, insulating barrier 3, semiconductor shield 4 outward; And inside and outside screen used is rubber-type semiconductive material.
The utility model structure is simple, and insulating barrier adopts the ethylene-propylene rubber bearing high temperature in certain hour, compares that insulation when conventional crosslinked polyethylene can not produce high temperature is softening, drip melt causes short circuit.
Extrude one deck phase-change temperature control layer outside insulated wire cores or outside stranding, this material undergoes phase transition and absorbs a large amount of heat guarantee internal temperatures not higher than 180 degree 180 degree time.Outside phase-change temperature control layer, extrude Ceramic silicon rubber thermal insulation layer, material high temperature when fire occurs of this structure sheaf causes ceramic, forms ceramic-like housing, plays heat insulation, back-fire relief effect.Back-fire relief effect is played at the outer wrapped mica tape of ceramic silicon rubber layer.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (10)

1. press a flexible cable in low smoke halogen-free fire retardant fire resistant, it is characterized in that: comprise conductor, described conductor is provided with screen in semiconductor outward successively, insulating barrier, semiconductor shield outward, metallic shield formation insulated wire cores; Phase-change temperature control layer, Ceramic silicon rubber thermal insulation layer, the wrapped flame retardant bed of mica, restrictive coating is provided with successively in described insulated wire cores outside.
2. press flexible cable in low smoke halogen-free fire retardant fire resistant according to claim 1, it is characterized in that: described insulated wire cores is single insulated wire cores or the three insulated wire cores compound inslation core by stranded formation.
3. press flexible cable in low smoke halogen-free fire retardant fire resistant according to claim 1 and 2, it is characterized in that: what described insulating barrier adopted is ethylene propylene rubber insulated.
4. press flexible cable in low smoke halogen-free fire retardant fire resistant according to claim 3, it is characterized in that: screen, insulating barrier in described semiconductor, semiconductor shields outward is a logical three-layer co-extruded extrusion molding; And inside and outside screen used is rubber-type semiconductive material.
5. press flexible cable in low smoke halogen-free fire retardant fire resistant according to claim 4, it is characterized in that: described metallic shield is that copper wire is dredged around formation.
6. press flexible cable in low smoke halogen-free fire retardant fire resistant according to claim 5, it is characterized in that: what described phase-change temperature control layer adopted is the solid-solid phase transition material of a kind of phase transition temperature at 160-180 degree.
7. press flexible cable in low smoke halogen-free fire retardant fire resistant according to claim 6, it is characterized in that: what described Ceramic silicon rubber thermal insulation layer adopted is a kind of Ceramic silicon rubber that can become rapidly hull shape face ceramic-like thermal insulation layer at 800-1000 degree temperature.
8. press flexible cable in low smoke halogen-free fire retardant fire resistant according to claim 7, it is characterized in that: what the wrapped flame retardant bed of described mica adopted is calcine the glass fibre belt that mica is coating.
9. press flexible cable in low smoke halogen-free fire retardant fire resistant according to claim 8, it is characterized in that: described conductor is six class copper conductors of GB/T3956 regulation.
10. press flexible cable in low smoke halogen-free fire retardant fire resistant according to claim 9, it is characterized in that: described restrictive coating is that fire-retardant EVA elastomer extrudes formation.
CN201420859864.4U 2014-12-31 2014-12-31 Flexible cable is pressed in low smoke halogen-free fire retardant fire resistant Expired - Fee Related CN204303399U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104464911A (en) * 2014-12-31 2015-03-25 湖南华菱线缆股份有限公司 Low smoke halogen-free flame-retardant fireproof medium-voltage flexible cable
CN105427921A (en) * 2015-12-22 2016-03-23 广东中德电缆有限公司 High temperature and high voltage resistant cable
CN109448912A (en) * 2018-12-12 2019-03-08 宋局 A kind of protective-cover type flame retardant cable
CN109509580A (en) * 2017-09-15 2019-03-22 上海电缆厂(南京)有限公司 A kind of heatable two-core cable
WO2020187841A1 (en) 2019-03-20 2020-09-24 Commissariat A L'energie Atomique Et Aux Energies Alternatives Cable for conducting an electric current, comprising a phase-change material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104464911A (en) * 2014-12-31 2015-03-25 湖南华菱线缆股份有限公司 Low smoke halogen-free flame-retardant fireproof medium-voltage flexible cable
CN105427921A (en) * 2015-12-22 2016-03-23 广东中德电缆有限公司 High temperature and high voltage resistant cable
CN109509580A (en) * 2017-09-15 2019-03-22 上海电缆厂(南京)有限公司 A kind of heatable two-core cable
CN109448912A (en) * 2018-12-12 2019-03-08 宋局 A kind of protective-cover type flame retardant cable
WO2020187841A1 (en) 2019-03-20 2020-09-24 Commissariat A L'energie Atomique Et Aux Energies Alternatives Cable for conducting an electric current, comprising a phase-change material
FR3094131A1 (en) * 2019-03-20 2020-09-25 Commissariat A L'energie Atomique Et Aux Energies Alternatives Cable for conducting an electric current comprising a phase change material

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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: 20150429

Termination date: 20181231