CN201204086Y

CN201204086Y - Weather resistance solar photovoltaic cable

Info

Publication number: CN201204086Y
Application number: CNU2008200363486U
Authority: CN
Inventors: 袁小平; 唐月芳
Original assignee: CHINA NANYANG CO LTD; No10 Branch Shanghai Electric Cable Factory
Current assignee: CHINA NANYANG CO LTD; No10 Branch Shanghai Electric Cable Factory
Priority date: 2008-05-21
Filing date: 2008-05-21
Publication date: 2009-03-04
Anticipated expiration: 2018-05-21

Abstract

The utility model discloses a solar photovoltaic cable with weathering resistance, comprising a conductor (1), an insulation layer (2), an isolation layer and an outer sheath (3). The conductor (1) is extruded with the insulation layer (2) and the outer sheath (3), which are made of polyolefin plastic by irradiation crosslink with more than 105 DEG C. The utility model has optimal weatherability, ultraviolet radiation tolerance and ozone erosiveness, and bears temperature change with larger range, e.g. from -40 DEG C to 125 DEG C.

Description

Weatherproof solar photovoltaic cable

Technical field

The utility model relates to a kind of cable, and especially a kind of Weatherproof solar photovoltaic cable can be adapted at the high place of weatherability and temperature grade and use.

Background technology

Along with solar energy or photovoltaic technology use day by day extensive, the wiring system that people will connect photovoltaic module also is considered as critical component, because being everlasting, uses under the severe environmental conditions solar energy system, as high temperature and ultraviolet radiation, in Europe, cause the scene temperature of solar energy system to be higher than 100 ℃ when fine, present polyvinyl chloride cable, because of temperature resistant grade is low, ampacity is low, easily aging, easy to crack, dielectric loss is big, shortcomings such as poison exponent height and environmental-protecting performance difference, its scope of application is restricted, even if the Plastic-sheathed Cable of 90 ℃ of temperature resistant grades also influences the useful life of solar energy system greatly.At present, European Union, the U.S., Japan and other countries, requirement to cable product is more and more higher, require not contain halogen, do not produce pernicious gas and corrosive gas, and formulated corresponding legal norm, and existing polyvinyl chloride cable can not adapt to this needs, and polyvinyl chloride cable just progressively is crosslinked cable and replaces.

The cable crosslinking method mainly contains two kinds: chemical crosslinking and physical crosslinking, chemical crosslinking are divided into dry cross-linking and wet water crosslinking again.Physical crosslinking claims cross-linking radiation again.

In the prior art, general crosslinked cable generally all is the chemical crosslinking cable both at home and abroad, and its temperature resistant grade only is 90 ℃, does not reach 105 ℃ of temperature resistant grades as yet.

Summary of the invention

In order to address the above problem, the utility model provides a kind of Weatherproof solar photovoltaic cable, the rated temperature of this Weatherproof solar photovoltaic cable can reach 120 ℃, not only has best weather resistance, UV resistant and ozone aggressivity, and can bear wider variations in temperature.

The utility model for the technical scheme that solves its technical problem and adopt is: a kind of Weatherproof solar photovoltaic cable, comprise conductor, insulating barrier, separator and outer jacket, conductor is extruded insulation layer and outer jacket successively from inside to outside, and described insulating barrier and outer jacket are the polyolefin plastics more than or equal to 105 ℃ of cross-linking radiations.

The beneficial effects of the utility model are: because outer jacket adopts the cross-linking radiation polyolefin plastics, have weatherability, and heatproof degree grade height, insulating barrier adopts cross-linking radiation polyolefin plastics, insulation property and good mechanical property; Again because outer jacket is extruded in the outer surface of described insulating barrier, so ageing resistance is strong, and insulating barrier is extruded on the described surface of conductors, makes cable allow the short circuit current that passes through bigger, can satisfy the needs that are used for outdoor high temperature place control system; Weatherproof solar photovoltaic cable is the cross-linked cable of a kind of electron beam again, described insulating barrier and outer jacket are the polyolefin plastics more than or equal to 105 ℃ of cross-linking radiations, therefore can reach 120 ℃ of rated temperatures, in corresponding device, can resist extreme climate environment and stand mechanical shock, and toxic components such as not leaded, mercury and cadmium, environmental protection; Generally speaking, this example not only has best weather resistance, UV resistant and ozone aggressivity, and can bear wider variations in temperature, for example: from-40 ℃ to 125 ℃.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

Embodiment: a kind of Weatherproof solar photovoltaic cable, comprise conductor 1, insulating barrier 2, separator and outer jacket 3, conductor 1 is extruded insulation layer 2 and outer jacket 3 successively from inside to outside, and described insulating barrier 2 and outer jacket 3 are the polyolefin plastics more than or equal to 105 ℃ of cross-linking radiations.

Separator described in this example is a kind of dedicated substances (as a talcum powder), is present between insulating barrier 2 and the outer jacket 3 when making, in case moulding, separator does not promptly exist.

Preparation method of the present utility model is to be undertaken by following step: 1., the coremaking metal is carried out wire drawing zinc-plated to described wire drawing metal annealing, make conductor; Insulating barrier (for the polyolefin more than or equal to 105 ℃ of cross-linking radiations) is extruded on the described surface of conductors; 2., again outer jacket (for the polyolefin more than or equal to 105 ℃ of cross-linking radiations) is extruded in the outer surface of described insulating barrier; 3., adopt cross-linking radiation technology the conductor that squeezes good insulating barrier and outer jacket to be carried out electron irradiation processing with electron accelerator; Wherein, the condition of described cross-linking radiation is: irradiation dose is 10-20mrd.

Claims

1. Weatherproof solar photovoltaic cable, comprise conductor (1), insulating barrier (2), separator and outer jacket (3), it is characterized in that: conductor (1) is extruded insulation layer (2) and outer jacket (3) successively from inside to outside, and described insulating barrier (2) and outer jacket (3) are the polyolefin plastics more than or equal to 105 ℃ of cross-linking radiations.