CN104157357A - Low-smoke zero-halogen solar photovoltaic cable - Google Patents

Abstract

The invention discloses a low-smoke zero-halogen solar photovoltaic cable. The cable comprises a soft conductor formed by twisting multi-strand tinned round copper unilines, wherein a polypropylene wrapping layer, a polyolefin insulating layer, a low-smoke zero-halogen wrapping layer and a polyolefin outer sheath layer are arranged outside the soft conductor in sequence. The invention further discloses a manufacturing method for the cable. According to the cable, the adopted low-smoke zero-halogen polyolefin insulating sheath material is excellent in flame retardant property and excellent in ultraviolet ageing resistant property, and provides complete protection on the cable; the insulating layer and the sheathing layer are subjected to the irradiation cross-linked treatment in sequence respectively, so that the molecular structure of the material is changed, and stability of products is greatly improved; the cable can endure the high temperature of 120 DEG C, can resist the rough weather and stand the mechanical impact, and can remarkably improve security and prolong the service life of a solar photovoltaic power generating device.

Description

A kind of low smoke halogen-free solar photovoltaic cable

technical field

The present invention relates to a kind of low smoke halogen-free solar photovoltaic cable, belong to electric wire field.

Background technology

Along with the increase of solar photovoltaic generation system Facilities Construction, cable use amount is in continuous increase.And the cable that all photovoltaic systems are used all should have fire-retardant, fire prevention, nontoxic, the performances such as light aging in resistance to day.This is by the development that greatly promotes solar energy photovoltaic system with environment-friendly cable.The solar photovoltaic cable using in the market, most various materials that adopt have PVC, rubber, TPE and high-quality cross-linked polymer material, but regrettably, rated temperature is the rubber cable of 90 ° of C, even if also having rated temperature is the also usually use out of doors of PVC cable of 70 ° of C, there are many enterprises in order to save cost, do not select solar energy system private cable, but select common pvc cable to carry out instead of optical luff cable, obviously, this will affect the useful life of system greatly, does not meet the instructions for use of solar energy photovoltaic system to cable.

Summary of the invention

For overcoming above-mentioned deficiency, the object of the invention is to provide a kind of rated voltage 0.6/1KV and the following low smoke halogen-free solar photovoltaic cable of can be fire-retardant, grease proofing, using under the occasion such as antiultraviolet is aging, resistance to mechanical stress.

The solution of the present invention is as follows: a kind of low smoke halogen-free solar photovoltaic cable, comprises that, by the stranded flexible conductor of the zinc-plated single round copper wire of multiply, conductor sets gradually polypropylene lapping layer, polyolefin insulation layer, low smoke and zero halogen band lapping layer, polyolefin external sheath layer outward.

Further, described flexible conductor is by stranded the forming of the zinc-plated single round copper wire of 7-49 root.

A production method for low smoke halogen-free solar photovoltaic cable, production stage is as follows:

(a) conductor: conductor is by adopting the 5th kind of stranded forming of zinc-plated single round copper wire left-hand bundle strand of GB/T3956-2008 standard;

(b) polypropylene lapping layer: by the outer wrapped one deck polypropylene tape of stranded good conductor, direction is contrary with conductor direction of lay; Polypropylene tape oxygen index reaches more than 35%, and Duplication is 20%;

(c) polyolefin insulation layer: at polypropylene lapping layer external irradiation cross-linking low-smoke halogen-free crosslinked polyolefin insulating material, form insulating barrier; Conductor, polypropylene lapping layer and polyolefin insulation layer form insulated wire cores;

(d) low smoke and zero halogen band lapping layer: wrapped one deck low-smoke bittern-free highly fire-proof band outside the insulated wire cores after crosslinked, oxygen index reaches more than 35%, and Duplication is 20%;

(e) polyolefin external sheath layer: the outer surface cover bag external sheath layer of low smoke and zero halogen band lapping layer, external sheath layer adopts halogen-free and low-smoke flame-retardant polyolefin sheathed material cross-linking radiation.

The present invention uses low-smoke halogen-free polyolefin insulating sheath material, has extremely excellent fire resistance, anti-ultraviolet aging performance, and cable has been played to protection completely.Insulating barrier and restrictive coating are taken up in order of priority and are carried out cross-linking radiation processing on the other hand, change the molecular structure of material, greatly improved the stability of product, 120 ℃ of it is high temperature resistant Du Keda, can resist harsh weather and stand mechanical shock, can significantly improve fail safe and the useful life of solar energy power generating equipment.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the present invention will be further described.

A low smoke halogen-free solar photovoltaic cable, comprises by the stranded flexible conductor 1 of the zinc-plated single round copper wire of multiply, outer polypropylene lapping layer 2, polyolefin insulation layer 3, low smoke and zero halogen band lapping layer 4, the polyolefin external sheath layer 5 of setting gradually of flexible conductor 1.

Further, described flexible conductor 1 is by stranded the forming of the zinc-plated single round copper wire of 7-49 root.

A production method for low smoke halogen-free solar photovoltaic cable, production stage is as follows:

(a) conductor: conductor is by adopting the 5th kind of stranded forming of zinc-plated single round copper wire left-hand bundle strand of GB/T3956-2008 standard;

(b) polypropylene lapping layer: by the outer wrapped one deck polypropylene tape of stranded good conductor, direction is contrary with conductor direction of lay; Polypropylene tape oxygen index reaches more than 35%, and Duplication is 20%;

(c) polyolefin insulation layer: at polypropylene lapping layer external irradiation cross-linking low-smoke halogen-free crosslinked polyolefin insulating material, form insulating barrier; Conductor, polypropylene lapping layer and polyolefin insulation layer form insulated wire cores;

(d) low smoke and zero halogen band lapping layer: wrapped one deck low-smoke bittern-free highly fire-proof band outside the insulated wire cores after crosslinked, oxygen index reaches more than 35%, and Duplication is 20%;

(e) polyolefin external sheath layer: the outer surface cover bag external sheath layer of low smoke and zero halogen band lapping layer, external sheath layer adopts halogen-free and low-smoke flame-retardant polyolefin sheathed material cross-linking radiation.

The product of producing by above technical scheme, carries out type approval test according to German TUV standard, and properties all meets the requirements.Within 2013, be sent to national electric wire quality monitoring inspection center and do pattern inspection and detect, according to GB/T 2951-2008 cable insulation and sheath material universal test method; GB/T3048-2007 electric wire electrical performance test method; The test method of evolved gas when GB/T17650-1998 takes from the material combustion of cable or optical cable; The smoke density that GB/T17651-1998 cable or optical cable burn is under given conditions measured; The classification of GB/T 20285-2006 material producing smoke toxicity risk, its test result is as follows:

From above Monitoring Data, reach a conclusion, performance of the present invention meets German TUV and national standard completely, illustrates that the design of this new structure and selecting of material are reasonably, meets the requirement of cable for solar photovoltaic generation system completely.

Although above the specific embodiment of the present invention has been given to describe in detail and explanation; but what should indicate is; we can carry out various equivalences to above-mentioned execution mode according to conception of the present invention and change and revise; when its function producing does not exceed spiritual that specification contains yet, all should be within protection scope of the present invention.

Claims (3)

1. a low smoke halogen-free solar photovoltaic cable, comprises that, by the stranded flexible conductor of the zinc-plated single round copper wire of multiply, its feature conductor sets gradually polypropylene lapping layer, polyolefin insulation layer, low smoke and zero halogen band lapping layer, polyolefin external sheath layer outward.

2. a kind of low smoke halogen-free solar photovoltaic cable according to claim 1, is characterized in that described flexible conductor is by stranded the forming of the zinc-plated single round copper wire of 7-49 root.

3. a production method for low smoke halogen-free solar photovoltaic cable, is characterized in that, production stage is as follows:

(a) conductor: conductor is by adopting the 5th kind of stranded forming of zinc-plated single round copper wire left-hand bundle strand of GB/T3956-2008 standard;

(b) polypropylene lapping layer: by the outer wrapped one deck polypropylene tape of stranded good conductor, direction is contrary with conductor direction of lay; Polypropylene tape oxygen index reaches more than 35%, and Duplication is 20%;

(c) polyolefin insulation layer: at polypropylene lapping layer external irradiation cross-linking low-smoke halogen-free crosslinked polyolefin insulating material, form insulating barrier; Conductor, polypropylene lapping layer and polyolefin insulation layer form insulated wire cores;

(d) low smoke and zero halogen band lapping layer: wrapped one deck low-smoke bittern-free highly fire-proof band outside the insulated wire cores after crosslinked, oxygen index reaches more than 35%, and Duplication is 20%;

(e) polyolefin external sheath layer: the outer surface cover bag external sheath layer of low smoke and zero halogen band lapping layer, external sheath layer adopts halogen-free and low-smoke flame-retardant polyolefin sheathed material cross-linking radiation.