CN203276947U - Environmentally friendly low-smoke halogen-free flame-retardant fireproof medium-voltage power cable - Google Patents

Environmentally friendly low-smoke halogen-free flame-retardant fireproof medium-voltage power cable Download PDF

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Publication number
CN203276947U
CN203276947U CN 201320203951 CN201320203951U CN203276947U CN 203276947 U CN203276947 U CN 203276947U CN 201320203951 CN201320203951 CN 201320203951 CN 201320203951 U CN201320203951 U CN 201320203951U CN 203276947 U CN203276947 U CN 203276947U
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CN
China
Prior art keywords
halogen
free
flame
retardant
layer
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320203951
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Chinese (zh)
Inventor
孙超南
任俊
祖恩建
胡成志
彭鹏
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ANHUI HAINA CABLE GROUP Co Ltd
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ANHUI HAINA CABLE GROUP Co Ltd
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Priority to CN 201320203951 priority Critical patent/CN203276947U/en
Application granted granted Critical
Publication of CN203276947U publication Critical patent/CN203276947U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an environmentally friendly low-smoke halogen-free flame-retardant fireproof medium-voltage power cable. A three-layered co-extrusion insulation wire core is formed by a compact twisted bare copper conductor and a conductor shielding layer, a chemical crosslinked polyethylene insulation layer and an insulation shielding layer which are extruded on the conductor. An oxygen-free soft copper belt, serving as a metal shielding layer, is used for overlapping and winding the insulation wire core. Multiple metal shielding layer insulation wire cores are twisted into a cable core. Gaps in the cable core are filled with halogen-free flame-retardant environmentally friendly filling ropes. The cable core is overlapped and wound by a halogen-free flame-retardant glass fiber belt winding layer, is extruded with a ceramic silicone rubber serving as a fireproof layer, and then is extruded with a halogen-free low-smoke high flame-retardant oxygen-separation layer, and then is overlapped and wound by four synthesized mica fireproof layers, and finally is extruded with a thermoplastic halogen-free low-smoke flame-retardant polyolefin outer sheath. The cable has the characteristics of being fireproof, halogen-free, low-smoke, high flame-retardant, oil-resistant, aging-resistant and so on and at the same time, has excellent mechanical, electrical, environmental protection functions and the like, and can be widely applied to important occasions and emergency occasions in medium-voltage line transmission.

Description

The fire-resistant medium-pressure power cable of resistant environmental low-smoke halogen-free flame
Technical field
The utility model relates to the fire-resistant medium-pressure power cable of a kind of resistant environmental low-smoke halogen-free flame, belongs to technical field of electric wires and cables.
Background technology
Fast development along with national economy, be related to the place of the people's safety at some, such as: the important places such as densely populated station, square, airport, emergency evacuation, require more and more higher to cable performance, particularly require to adopt the resistant environmental low-smoke halogen-free flame fireproof power cable, and at present domestic low pressure environment-friendly type low-smoke non-halogen engineering level comparison is ripe, but can only be used for the low-voltage power transmission system.For midium voltage cable, because electric pressure is higher, insulated wire cores adopts three-layer co-extruded chemical crosslinking technology, adopts the method at the overlapping wrapped mica tape of conductive surface can't satisfy its higher electric property.In view of the particularity of the fire-resistant medium-pressure power cable of resistant environmental low-smoke halogen-free flame, the most of dependence import of present many use producers, and the import cable is expensive, production cycle is long, haul-cycle time is long, and cost of transportation is higher, the development of serious restriction national economy.
The development of Environmental Protection in China type low smoke halogen-free fire retardant fire resistant medium-pressure power cable is started late, most of producer technical merit can't satisfy its higher specification requirement, add that in recent years the demand to the fire-resistant medium-pressure power cable of resistant environmental low-smoke halogen-free flame sharply increases, and also more and more higher to the specification requirement of cable, cause many producers can not design, produce the fire-resistant medium-pressure power cable product of the resistant environmental low-smoke halogen-free flame that satisfies specification requirement.Permitted great producer or company, for the most of imported product that adopts of middle pressure fireproof power cable, be unfavorable for the development of Chinese environmental protection type low smoke halogen-free fire retardant fire resistant medium-pressure power cable.
Summary of the invention
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of resistant environmental low-smoke halogen-free flame fire-resistant medium-pressure power cable, have fire-resistant, Halogen, low cigarette, high flame retardant, oil resistant, the characteristic such as ageing-resistant, also have simultaneously the functions such as excellent machinery, electric, environmental protection, can be widely used in important place and emergent place in the medium-voltage line transmission, product performance index is better than the international standard requirement.
The utility model technical solution problem adopts following technical scheme:
the fire-resistant medium-pressure power cable of a kind of resistant environmental low-smoke halogen-free flame, by pressing stranded bare copper conductor and the conductor shield that extrudes on described conductor, processes for chemically crosslinked polyethylene insulating barrier and insulation screen consist of three-layer co-extruded insulated wire cores, insulated wire cores adopts the soft copper band overlapping wrapped as metal screen layer outward, many described band metal screen layer insulated wire cores are twisted into cable core, the cable core gap is provided with halogen-free flame-retardant environment-friendly gasket for packing packed layer, the outer overlapping halogen-free flameproof glass fabric strip lapping layer that is surrounded with of described cable core, be extruded with ceramic silicon rubber as flame retardant coating, extrude again one deck halogen-free low-smoke high-flame oxygen barrier layer, its outer overlapping wrapped four laminated one-tenth mica tape flame retardant coatings, be extruded with the thermoplastic halogen-free and low-smoke flame-retardant polyolefin oversheath.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the utility model flame retardant coating adopts a kind of new ceramics SiClx elastomeric material, and under flame condition, this material carbonization crystallization stops the infiltration of flame and entering of oxygen, is inside and outside isolated, guarantees that circuit can normally move more than 90 minutes.
2, in the utility model, outer employing of flame retardant coating extrudes one deck halogen-free low-smoke high-flame oxygen barrier layer material, under flame condition, can effectively completely cut off flame, and fire retardancy promotes greatly, has guaranteed the normal operation of cable.
3, the outer wrapped four laminated one-tenth mica tape materials that adopt of flame retardant coating in the utility model, under flame condition, can effectively stop flame to spread to inside, greatly strengthens the fire-resistant and fire retardancy of product, guaranteed the normal operation of cable.
4, extruding the thermoplastic halogen-free and low-smoke flame-retardant polyolefin oversheath in the utility model is a kind of novel environment friendly material, not only have excellent flame-retarding characteristic, environmental-protecting performance, have more Halogen, low cigarette, alkali-free, without asbestos, oil resistant, the characteristic such as ageing-resistant, press the instructions for use of fire-resisting cable in satisfying fully.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Number in the figure: 1 conductor, 2 conductor shields, 3 insulating barriers, 4 insulation screens, 5 copper strips lapping layers, 6 packed layers, 7 lapping layers, 8 flame retardant coatings, 9 oxygen barrier layers, 10 flame retardant coatings, 11 oversheaths.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment:
embodiment: referring to Fig. 1, the fire-resistant medium-pressure power cable of a kind of resistant environmental low-smoke halogen-free flame of this enforcement, by pressing stranded bare copper conductor 1 and the conductor shield 2 that extrudes on described conductor 1, processes for chemically crosslinked polyethylene insulating barrier 3 and insulation screen 4 consist of three-layer co-extruded insulated wire cores, insulated wire cores adopts soft copper band 5 overlapping wrapped as metal screen layer outward, many described band metal screen layer insulated wire cores are twisted into cable core, the cable core gap is provided with halogen-free flame-retardant environment-friendly gasket for packing packed layer 6, the outer overlapping halogen-free flameproof glass fabric strip lapping layer 7 that is surrounded with of described cable core, be extruded with ceramic silicon rubber as flame retardant coating 8, extrude again one deck halogen-free low-smoke high-flame oxygen barrier layer 9, its outer overlapping wrapped four laminated one-tenth mica tape flame retardant coatings 10, be extruded with thermoplastic halogen-free and low-smoke flame-retardant polyolefin oversheath 11.
In concrete enforcement, corresponding structure setting and material are selected to be respectively:
Conductor 1 is to adopt the anaerobic bare copper wire to press the strand system to form, and activity coefficient reaches 0.91, conductor layer any surface finish, without burr;
Press semiconductive conductor screen material during conductor shield 2 adopts, and insulation, insulation shielding are three-layer co-extruded together;
Insulating barrier 3 is to be extruded in by processes for chemically crosslinked polyethylene the layer that extrudes that forms on conductor screen, adopts the three-layer co-extruded technique of chemical crosslinking;
Press semiconductive insulation shielding material during insulation screen 4 adopts, and insulation, conductor screen are three-layer co-extruded together;
Copper strips lapping layer 5 adopts the soft copper band overlapping wrapped on insulation shielding, and Duplication is not less than 20%;
Packed layer 6 adopts the halogen-free flame-retardant environment-friendly gasket for packing, fills rounding;
Lapping layer 7 adopts halogen-free flameproof glass fabric strip overlapping wrapped in the cable core outside;
Flame retardant coating 8 adopts and extrudes ceramic silicon rubber refractory material, and through continuous vulcanization technique;
Oxygen barrier layer 9 adopts and extrudes one deck halogen-free low-smoke high-flame polyolefin;
Lapping layer 10 adopts four laminated one-tenth mica tape refractory materials overlapping wrapped in the oxygen barrier layer outside;
Oversheath 11 adopts and extrudes thermoplastic halogen-free and low-smoke flame-retardant polyolefin.

Claims (1)

1. fire-resistant medium-pressure power cable of resistant environmental low-smoke halogen-free flame, it is characterized in that by pressing stranded bare copper conductor (1) and extruding conductor shield (2) on described conductor (1), processes for chemically crosslinked polyethylene insulating barrier (3) and insulation screen (4) consist of three-layer co-extruded insulated wire cores, insulated wire cores adopts anaerobic soft copper band (5) overlapping wrapped as metal screen layer outward, many described band metal screen layer insulated wire cores are twisted into cable core, the cable core gap-fill has halogen-free flame-retardant environment-friendly gasket for packing (6), the outer overlapping halogen-free flameproof glass fabric strip lapping layer (7) that is surrounded with of described cable core, be extruded with ceramic silicon rubber flame retardant coating (8), extrude again one deck halogen-free low-smoke high-flame oxygen barrier layer (9), its outer overlapping wrapped four laminated one-tenth mica tape flame retardant coatings (10), be extruded with thermoplastic halogen-free and low-smoke flame-retardant polyolefin oversheath (11).
CN 201320203951 2013-04-11 2013-04-11 Environmentally friendly low-smoke halogen-free flame-retardant fireproof medium-voltage power cable Expired - Fee Related CN203276947U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320203951 CN203276947U (en) 2013-04-11 2013-04-11 Environmentally friendly low-smoke halogen-free flame-retardant fireproof medium-voltage power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320203951 CN203276947U (en) 2013-04-11 2013-04-11 Environmentally friendly low-smoke halogen-free flame-retardant fireproof medium-voltage power cable

Publications (1)

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CN203276947U true CN203276947U (en) 2013-11-06

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103578639A (en) * 2013-11-15 2014-02-12 江苏珠影特种电缆有限公司 Low-smoke zero-halogen environment-friendly fire resistant cable
CN105070372A (en) * 2015-08-12 2015-11-18 江苏中煤电缆有限公司 Medium-voltage plastic insulation fireproof electric wire cable
CN105070396A (en) * 2015-08-21 2015-11-18 安徽华星电缆集团有限公司 Medium-voltage fireproof power cable for coal mine
CN105070394A (en) * 2015-07-29 2015-11-18 兰州众邦电线电缆集团有限公司 Fire-proof and fire-resistant medium-voltage power cable
CN105304177A (en) * 2015-12-07 2016-02-03 无锡江南电缆有限公司 Power control composite braided shield flexible cable for urban railway system
CN105702362A (en) * 2016-04-05 2016-06-22 西部电缆股份有限公司 Environment-friendly type aluminum alloy fire-resistant cable
CN108538475A (en) * 2018-03-09 2018-09-14 深圳讯道实业股份有限公司 A kind of resist bending fire-resisting cable
CN111627608A (en) * 2019-02-27 2020-09-04 云南多宝电缆集团股份有限公司 A-type flame-retardant fire-resistant medium-voltage cable and production method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103578639A (en) * 2013-11-15 2014-02-12 江苏珠影特种电缆有限公司 Low-smoke zero-halogen environment-friendly fire resistant cable
CN105070394A (en) * 2015-07-29 2015-11-18 兰州众邦电线电缆集团有限公司 Fire-proof and fire-resistant medium-voltage power cable
CN105070372A (en) * 2015-08-12 2015-11-18 江苏中煤电缆有限公司 Medium-voltage plastic insulation fireproof electric wire cable
CN105070396A (en) * 2015-08-21 2015-11-18 安徽华星电缆集团有限公司 Medium-voltage fireproof power cable for coal mine
CN105304177A (en) * 2015-12-07 2016-02-03 无锡江南电缆有限公司 Power control composite braided shield flexible cable for urban railway system
CN105702362A (en) * 2016-04-05 2016-06-22 西部电缆股份有限公司 Environment-friendly type aluminum alloy fire-resistant cable
CN108538475A (en) * 2018-03-09 2018-09-14 深圳讯道实业股份有限公司 A kind of resist bending fire-resisting cable
CN111627608A (en) * 2019-02-27 2020-09-04 云南多宝电缆集团股份有限公司 A-type flame-retardant fire-resistant medium-voltage cable and production method thereof

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131106

Termination date: 20140411