CN205992435U - A kind of alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environment-friendly cable - Google Patents

Abstract

The utility model discloses a kind of alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environment-friendly cable, its insulated core includes conductor（1）And it is wrapped in conductor（1）Heat-resisting 105 DEG C of organosilane crosslinked polyethylene inner insulating layers on surface（2）With heat-resisting 105 DEG C of silane crosslinked halogen-free low-smoke and flame retardant polyethylene external insulation layers（3）, have inner liner outside insulated core（5）, in insulated core and inner liner（5）Space be filled with implant（4）；In inner liner（5）Outside is provided with metal armor layers（6）, in metal armor layers（6）Outside is provided with silane crosslinked halogen-free low-smoke flame-proof polyolefin external sheath layer（7）.This utility model eliminates this loaded down with trivial details link of cross-linking radiation, greatly reduce the manufacturing cost of cable itself, alternative traditional PVC polrvinyl chloride, XLPE crosslinked polyethylene, low smoke, zero halogen and irradiation crosslinking halogen-free low-smoke fireproof cable, accomplish safety durable, environmental protection, provide reliable guarantee for residential electricity consumption.

Description

A kind of alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environment-friendly cable

Technical field

This utility model is related to a kind of power cable, especially a kind of alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environmental protection Cable, belongs to the technical field of electric wire.

Background technology

In current industrialized society, the energy and information are the Two Mainstays of social development, regardless of whether be electric energy or The transmission of information, all be unable to do without cable, particularly school, market, high-rise commerce and trade building, subway, tunnel and nuclear power station etc..From 2015 2 months 1 Nikkei People's Republic of China (PRC) houses and town and country construction portion implement new standard JG441T-2014《Rated voltage 450/750v and following double-layer coextrusion insulated crosslinked halogen-free low-smoke and flame retardant electric wire》、JG442T-2014 《Rated voltage 0.6 1kV Double-layer coextrusion insulated crosslinked halogen-free low-smoke flame-retardant electrical cable》Afterwards, the enforcement of this standard will bring the new of building wire cable Revolution, for meeting the laws and regulations requirement of fire safety in all parts of the country and environmental protection, accomplishes the good effect disposably laid, use throughout one's life Really, the only irradiation crosslinking halogen-free low-smoke fireproof cable of this requirement can in current cable industry product, be reached, this cable produces Product have the spy such as high temperature resistant, aging resistance, fire-retardant, smokelessly nontoxic and low corrosion and big, the strong, long service life of overload capacity of current-carrying capacity Point.Cable service life is directly related to the aging life-span of cable insulation material, and the thermal lifetime of therefore insulant is direct Affect the service life of cable., if long-term work is allowed in itself with product taking irradiation crosslinking halogen-free low-smoke fireproof cable as a example 105 degree of derivations of rated temperature, its thermal lifetime was more than 60 years, if being derived with operating temperature for when 90 degree, its thermal lifetime More than 100 years, however, irradiation crosslinking halogen-free low-smoke fireproof cable processing mode when producing is complicated, operation was more, not easily-controllable System, must repeatedly stand " irradiation ", the height producing uniformly through high-energy electron accelerator back and forth after the insulating exruded cooling of cable Energy electronic beam current carries out the process of cross-linking radiation to cable.As can be seen here, as irradiation crosslinking halogen-free low-smoke fireproof cable, high energy Electron accelerator and expensive irradiation crosslinking halogen-free low-smoke and flame retardant material are necessary requirements.And at present according to incompletely statistics, domestic electricity Cable industry more than 7000, high-energy electron accelerator only more than 60 platform, be wherein used for only more than 50 platforms of cable processing, completely offset from Cable industry produces the demand of irradiation crosslinking halogen-free low-smoke fireproof cable necessary requirement, thus causing to produce irradiation crosslinking halogen-free Irradiation and freight be increased on the cost of low-smoke fireproof cable, and Some Enterprises irradiation apparatus in cable irradiation processing industry As electron accelerator design does not reach requirement, not, the product degree of cross linking after irradiation not, fails to reach modification detection meanss Require, product hands over inspection qualification rate low, there are larger quality problems.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of alternative irradiation crosslinking halogen-free low-smoke and flame retardant type Environment-friendly cable, this cable may replace traditional PVC polrvinyl chloride, XLPE crosslinked polyethylene, low smoke, zero halogen and irradiation crosslinking halogen-free Low-smoke fireproof cable, service life can bring up to 70 years, can reach the good result disposably laid, use throughout one's life, accomplishes to pacify Entirely durable, environmental protection, provides reliable guarantee for residential electricity consumption.

For solving above-mentioned technical problem, the technical solution adopted in the utility model is as follows：

A kind of alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environment-friendly cable, it includes insulated core, described insulation cable Core includes conductor and the heat-resisting 105 DEG C of organosilane crosslinked polyethylene inner insulating layers being wrapped in conductive surface and heat-resisting 105 DEG C of silane Crosslinked halogen-free low-smoke and flame retardant polyethylene external insulation layer, heat-resisting 105 DEG C of organosilane crosslinked polyethylene inner insulating layers are wrapped in the table of conductor Face, heat-resisting 105 DEG C of silane crosslinked halogen-free low-smoke and flame retardant polyethylene external insulations are wrapped in heat-resisting 105 DEG C of organosilane crosslinked polyethylenes absolutely The surface of edge layer；It is externally provided with inner liner in insulated core, be filled with implant between insulated core and the space of inner liner；? It is provided with metal armor layers outside inner liner, be provided with shield outside silane crosslinked halogen-free low-smoke flame-proof polyolefin in the outside of metal armor layers Jacket layer.

In above-mentioned alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environment-friendly cable, described conductor is by many copper and aluminum Or aluminium alloy monofilament is stranded forms.

In aforesaid alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environment-friendly cable, described implant is preferably fire-retardant anti- Flint silk floss gasket for packing, inner liner is preferably LSOH anti-flaming sheath.

The beneficial effects of the utility model：This utility model not only has traditional irradiation crosslinking halogen-free low-smoke fireproof cable Characteristic, but also with crosslinked function, all can reach crosslinking in warm water or natural environment, is resistant to 105 degree of hot environment work, has Simple production process, easy to operate, be easily controlled, the features such as production efficiency is high, and the most key, with irradiation crosslinking halogen-free Low-smoke fireproof cable is compared, and it needs not move through irradiation, eliminate this loaded down with trivial details link of cross-linking radiation, it is to avoid cable is because irradiated Afterwards contact conductor occur puncturing in a large number when electric discharge, submerging test, after the loosening and separate and be irradiated of insulating barrier and conductor absolutely Produce the bad quality problems such as bubble in edge layer, enormously simplify production process, the stability that simultaneously improve production (avoids spoke According to during conductor indium blackening problem), ensure product properties while saved irradiation high cost and come Return the freight of irradiation, thus greatly reducing the manufacturing cost of cable itself.This utility model is alternative in the market PVC polrvinyl chloride, XLPE crosslinked polyethylene, low smoke, zero halogen and the irradiation crosslinking halogen-free low-smoke fireproof cable using, breaks existing With national standard, service life was brought up to 70 years by 25 years, can reach the good result disposably laid, use throughout one's life, do To safety durable, environmental protection, provide reliable guarantee for residential electricity consumption.

Table 1 this utility model and irradiation crosslinking halogen-free low-smoke fireproof cable production cost, production efficiency contrast

Brief description

Fig. 1 is structural representation of the present utility model.

With reference to the accompanying drawings and detailed description this utility model is further described.

Specific embodiment

Embodiment 1：As shown in figure 1, including the insulated core of 4 same structures, the composition of every insulated core includes leading Body 1 and by double-layer coextrusion mode respectively heat-resisting 105 DEG C of organosilane crosslinked polyethylene inner insulating layers 2 on conductor 1 surface for the extrusion molding With heat-resisting 105 DEG C of silane crosslinked halogen-free low-smoke and flame retardant polyethylene external insulation layers 3, heat-resisting 105 DEG C of organosilane crosslinked polyethylene interior insulations Layer 2 is wrapped in the surface of conductor 1, and heat-resisting 105 DEG C of silane crosslinked halogen-free low-smoke and flame retardant polyethylene external insulations 3 are wrapped in heat-resisting 105 The surface of DEG C organosilane crosslinked polyethylene inner insulating layer 2, its gross thickness is not less than the insulating barrier of standard thickness, and 4 insulated core become It is circular after cable.By many copper and aluminum or aluminum alloy monofilament is stranded forms for conductor 1.It is extruded with one layer of Halogen low outside insulated core Cigarette fire retardant jacket, as inner liner 5, is filled with fire-retardant fireproof asbestos gasket for packing between the space of insulated core and inner liner 5 and makees For implant 4, to ensure cable roundness.Use one layer of wrinkle shape or wrapped of aluminum alloy strip spiral winding in the outside of inner liner 5 Bimetallic strip forms metal armor layers 6, extrudes one layer of silane crosslinked halogen-free low-smoke flame-proof polyolefin in the outside of metal armor layers 6 Oversheath is as external sheath layer 7.This utility model（Silane crosslinked halogen-free low-smoke fireproof cable）Insulated core mainly adopt resistance to Hot 105 DEG C of organosilane crosslinked polyethylenes are completed with heat-resisting 105 DEG C of silane crosslinked halogen-free low-smoke and flame retardant polyethylene double co-extrusions, and sheath is By silane crosslinked halogen-free low-smoke flame-proof polyolefin as external sheath layer, common ground is all to be added with vistanex for primary raw material The auxiliary agents such as coupling agent, fire retardant, stabilizer, antismoke agent, lubricant by mixing, extrusion, pelletize and be obtained.Its performance can be shown in Table 2：

Table 2 this utility model and irradiation crosslinking halogen-free low-smoke fireproof cable performance comparison

As seen from Table 2, silane crosslinked halogen-free low-smoke and flame retardant polyethylene insulation of the present utility model with generally use at present Irradiation crosslinking halogen-free low-smoke and flame retardant polyethylene insulation compare, its mechanical performance, fire resistance and electric property are essentially identical, resistance to Warm grade is all 105 DEG C.And silane crosslinked halogen-free low-smoke flame-proof polyolefin oversheath of the present utility model with current use general Logical thermoplastic halogen-free and low-smoke flame-retardant polyolefin sheathed compare, the mechanical performance after crosslinking, fire resistance greatly improve, and are cross-linked to form Tridimensional network enhance thermostability and the stability of material, thus once and for all to solve conventional thermoplastic halogen-free low The problem of smoke flame-retardant polyolefin sheathed frequent cracking, thus more embody practical value and the warp of this utility model environment-friendly cable Ji property, the irradiated crosslinking low-smoke and halogen-free flame retardant that completely alternative market from the point of view of performance, efficiency, cost, the economic benefit uses Cable.

Embodiment of the present utility model is not limited to above-described embodiment, does on the premise of without departing from this utility model objective The various change going out belongs within protection domain of the present utility model.

Claims (3)

1. a kind of alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environment-friendly cable, including insulated core it is characterised in that：Described Insulated core includes conductor（1）And it is wrapped in conductor（1）Heat-resisting 105 DEG C of organosilane crosslinked polyethylene inner insulating layers on surface（2） With heat-resisting 105 DEG C of silane crosslinked halogen-free low-smoke and flame retardant polyethylene external insulation layers（3）, in heat-resisting 105 DEG C of organosilane crosslinked polyethylenes absolutely Edge layer（2）It is wrapped in conductor（1）Surface, heat-resisting 105 DEG C of silane crosslinked halogen-free low-smoke and flame retardant polyethylene external insulation layers（3）Parcel In heat-resisting 105 DEG C of organosilane crosslinked polyethylene inner insulating layers（2）Surface；It is externally provided with inner liner in insulated core（5）, in insulation cable Core and inner liner（5）Space between be filled with implant（4）；In inner liner（5）Outside be provided with metal armor layers（6）, Metal armor layers（6）Outside be provided with silane crosslinked halogen-free low-smoke flame-proof polyolefin external sheath layer（7）.

2. alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environment-friendly cable according to claim 1 it is characterised in that：Described Conductor（1）By many copper with aluminum or aluminum alloy monofilament is stranded forms.

3. alternative irradiation crosslinking halogen-free low-smoke and flame retardant type environment-friendly cable according to claim 1 it is characterised in that：Described Implant（4）For fire-retardant fireproof asbestos gasket for packing, inner liner（5）For LSOH anti-flaming sheath.