CN204991238U

CN204991238U - Photovoltaic cable

Info

Publication number: CN204991238U
Application number: CN201520709486.6U
Authority: CN
Inventors: 石学军
Original assignee: Anhui Honghai Cable Co Ltd
Current assignee: Anhui Honghai Cable Co Ltd
Priority date: 2015-09-14
Filing date: 2015-09-14
Publication date: 2016-01-20
Anticipated expiration: 2025-09-14

Abstract

The utility model provides a photovoltaic cable, including cable core and cable cover, cable cover parcel is on the cable core, and the cable core includes the conductor, and the conductor is stranded by the soft copper wire of stranded tin -plating each other to be formed, and conductor pitch diameter ratio is lighter than 12, and cable cover from interior to exterior includes polyester belt isolation layer, radiation cross -linking polyolefin insulation layer and radiation cross -linking polyolefin restrictive coating in proper order. The utility model discloses simple structure to have good calorifics characteristic, mechanical characteristic and chemical characteristic.

Description

A kind of photovoltaic cable

Technical field

The utility model relates to a kind of cable, is specifically related to a kind of photovoltaic cable.

Background technology

Solar energy resources is abundant, widely distributed, is 21 century the most potential regenerative resource.Along with global energy shortage and the problem such as environmental pollution become increasingly conspicuous, solar energy power generating because of its clean, safety, facility, the feature such as efficient, the new industry having become countries in the world common concern and given priority to.

Solar energy refers generally to the emittance of sunlight.Main photothermal deformation, opto-electronic conversion and the Photochemical convertion utilizing form to have solar energy three kinds of major ways of solar energy.Sensu lato solar energy is the source of many energy on the earth, as wind energy, and chemical energy, the form of energy that the potential energy of water etc. are caused by solar energy or change into.Utilizing the method for solar energy to mainly contain: solar cell, is electric energy by opto-electronic conversion the Conversion of Energy comprised in sunlight; Solar water heater, utilizes the heat heating water of sunlight, and utilizes hot water generating etc.Solar energy clean environment firendly, without any pollution, value is high, and solar energy does not more have this saying of energy shortage, its various advantages determine its energy substitute in the status do not replaced.

In this context, global photovoltaic generation industry increases swift and violent, and industry size constantly expands, product cost continuous decrease.China's photovoltaic generation industry is also developed rapidly, become China few in number, synchronously can take part in international competition and be expected to the industry of reaching the international leading level.Enterprise with the traditional method that " year " carries out strategy and Developing Tactics for unit, seemed that some is unable to do what one wishes even passive in industry fast-changing today in the past.So enterprise for unit, carries out the Operation Method of strategy and even strategical reajustment with " monthly " according to industry latest development trend in good time, be just day by day subject to the great attention of many large enterprise managers especially overseas-funded enterprise's management level.

" 12 " China in period increases solar photovoltaic power plant installed capacity about 1,000 ten thousand kilowatts newly, solar light-heat power-generation installed capacity 1,000,000 kilowatts, distributed photovoltaic power generation system about 1,000 ten thousand kilowatts, photovoltaic plant investment is by average 10,000 yuan every kilowatt measuring and calculating, distributed photovoltaic system presses 1.5 ten thousand yuan every kilowatt measuring and calculating, gross investment demand about 2,500 hundred million yuan.

Under the new normality of economy, develop new forms of energy, widely popularize the new model that environmental protection industry becomes China's economic development, and photovoltaic industry should be just fresh combatants and the beneficiary of this pattern.Photovoltaic is considered to the regenerative resource of clean environment firendly always, and when present atmospheric environment is concerned especially, doing such support to photovoltaic industry is also in order to environmental protection.

Heliotechnics will become one of the green energy resource technology in future, solar energy or photovoltaic (PV) are applied day by day extensive in China, except the photovoltaic generation factory development rapidly of governmental support, private investor also just actively founds the factory, and plan is gone into operation at the solar components of global marketing.

Photovoltaic cable is often showed under sunlight, and solar energy system often can use, as low temperature and ultraviolet radiation under base environment prerequisite.At home or abroad, during fair weather, will the on-the-spot maximum temperature of solar energy system be caused up to 100 DEG C.

The general admissible all kinds of material of common cable has the high-quality intertexture link materials such as polyvinyl chloride (PVC), rubber, elastomer (TPE) and crosslinked polyethylene (XLPE), but it's a pity that the maximum amount fixed temperature of common cable work is 90 DEG C, even separately there is rated temperature to be that the polyvinyl chloride cable of 70 DEG C also often uses out of doors, but high temperature, antiultraviolet, cold-resistant requirement can not be met.

With regard to photovoltaic application, the material of outdoor use should be determined according to ultraviolet, ozone, dramatic temperature change and chemical erosion situation.Under this kind of environmental stress, use low-grade material, cable cover(ing) will be caused frangible, even can decompose cable insulation.All these situations all directly can increase cable system loss, and the risk that cable short circuit occurs simultaneously also can increase, and in a midium or long term, the possibility of breaking out of fire or personnel's injury is also higher.

In fact, solar energy system usually can use in harsh environments, as high temperature and ultraviolet radiation.In Europe, during fine day, will the scene temperature of solar energy system be caused up to 100 DEG C.So far, we have PVC, rubber, TPE and high-quality cross-linked polymer material by adoptable various material, but regrettably, rated temperature is the rubber cable of 90 DEG C, even if also have rated temperature to be that the PVC cable of 70 DEG C also usually uses out of doors, obviously, this is by the useful life of influential system greatly.But, if fail to adopt the private cable of Application of Solar Energy, the useful life of whole system will be had influence on.

In fact, during installation and maintenance, cable can connect up on the sharp edge of roof structure, and cable must bear pressure, bending, tension force, be stretched across load and brute force attack simultaneously.If cable cover(ing) insufficient strength, then cable insulation will be subject to badly damaged, thus affects the useful life of whole cable, or causes short circuit, fire and personnel to injure the appearance of the problems such as danger.

Utility model content

Based on the technical problem that background technology exists, the utility model proposes a kind of photovoltaic cable, its structure is simple, and has good thermal characteristic, mechanical property and chemical characteristic.

A kind of photovoltaic cable that the utility model proposes, comprises cable core and cable cover;

Cable cover is wrapped on cable core, and cable core comprises conductor, and conductor forms by multiply zinc-plated soft copper silk is mutually stranded, and conductor lay ratio is less than 12, and cable cover comprises polyester belt isolation layer, irradiation crosslinked polyolefin insulating layer and cross-linking radiation polyolefin sheath layer from the inside to the outside successively.

Preferably, cable core also comprises inner insulating layer, and inner insulating layer is wrapped on conductor.

Preferably, cable core also comprises screen, and screen is wrapped on inner insulating layer.

Preferably, screen is made up of the zinc-plated copper mesh of the plastic-aluminum combined film of outer field polyester and internal layer.

Preferably, cable cover also comprises steel-tape armouring layer, and steel-tape armouring layer is between polyester belt isolation layer and irradiation crosslinked polyolefin insulating layer.

Preferably, steel-tape armouring layer is double-deck zinc-plated low-alloy steel band.

Preferably, zinc-plated soft copper filament diameter is less than 0.41mm.

Preferably, zinc-plated soft copper silk has 32.

The utility model adopts fire resistance rating to be the irradiation crosslinked polyolefin insulating layer of 125 DEG C and warm grade to be the cross-linking radiation polyolefin jacket bed of material of 125 DEG C, and irradiation crosslinked polyolefin insulating layer and the cross-linking radiation polyolefin jacket bed of material have good thermal characteristic, mechanical property and chemical characteristic; Zinc-plated soft copper silk can prevent insulation rubber to be clamminess, and core blackout becomes fragile, and zinc-plated soft copper silk lay ratio is less than 12, improves flexibility and the bending property of cable.

Accompanying drawing explanation

Fig. 1 is a kind of photovoltaic cable structural representation that the utility model proposes.

Embodiment

With reference to shown in Fig. 1, a kind of photovoltaic cable that the utility model proposes, comprises cable core 1 and cable cover 2.

Cable cover 2 is wrapped on cable core 1, cable core 1 comprises conductor, conductor forms by multiply zinc-plated soft copper silk is mutually stranded, conductor lay ratio is less than 12, cable cover 2 comprises polyester belt isolation layer 21, irradiation crosslinked polyolefin insulating layer 22 and cross-linking radiation polyolefin sheath layer 23 from the inside to the outside successively, and irradiation crosslinked polyolefin insulating layer 22 and cross-linking radiation polyolefin sheath layer 23 adopt bilayer once to extrude.

In present embodiment, cable core 1 also comprises inner insulating layer and screen, inner insulating layer is wrapped on conductor, effectively raise the fail safe of this photovoltaic cable, cable core 1 also comprises, and screen is wrapped on inner insulating layer, reduces the impact to external world of cable magnetic field and the impact of outer bound pair current stability, screen is made up of the zinc-plated copper mesh of the plastic-aluminum combined film of outer field polyester and internal layer, has good shield effectiveness.

In present embodiment, cable cover 2 also comprises steel-tape armouring layer 24, and steel-tape armouring layer 24 is between polyester belt isolation layer 21 and irradiation crosslinked polyolefin insulating layer 22, and steel-tape armouring layer 24 is double-deck zinc-plated low-alloy steel band, effectively improves the comprehensive new energy of this photovoltaic cable.

In present embodiment, zinc-plated soft copper filament diameter is less than 0.41mm, and zinc-plated soft copper silk has 32.

The above; be only the utility model preferably embodiment; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and utility model design thereof and replace or change, all should be encompassed within protection range of the present utility model.

Claims

1. a photovoltaic cable, is characterized in that: comprise cable core (1) and cable cover (2);

Cable cover (2) is wrapped on cable core (1), cable core (1) comprises conductor, conductor forms by multiply zinc-plated soft copper silk is mutually stranded, conductor lay ratio is less than 12, and cable cover (2) comprises polyester belt isolation layer (21), irradiation crosslinked polyolefin insulating layer (22) and cross-linking radiation polyolefin sheath layer (23) from the inside to the outside successively.

2. photovoltaic cable according to claim 1, is characterized in that: cable core (1) also comprises inner insulating layer, and inner insulating layer is wrapped on conductor.

3. photovoltaic cable according to claim 2, is characterized in that: cable core (1) also comprises screen, and screen is wrapped on inner insulating layer.

4. photovoltaic cable according to claim 3, is characterized in that: screen is made up of the zinc-plated copper mesh of the plastic-aluminum combined film of outer field polyester and internal layer.

5. photovoltaic cable according to claim 1, it is characterized in that: cable cover (2) also comprises steel-tape armouring layer (24), steel-tape armouring layer (24) is positioned between polyester belt isolation layer (21) and irradiation crosslinked polyolefin insulating layer (22).

6. photovoltaic cable according to claim 5, is characterized in that: steel-tape armouring layer (24) is double-deck zinc-plated low-alloy steel band.

7. the photovoltaic cable according to claim 1-6 any one, is characterized in that: zinc-plated soft copper filament diameter is less than 0.41mm.

8. photovoltaic cable according to claim 7, is characterized in that: zinc-plated soft copper silk has 32.