CN102254597A - Photovoltaic cable and manufacture method thereof - Google Patents
Photovoltaic cable and manufacture method thereof Download PDFInfo
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- CN102254597A CN102254597A CN 201110103620 CN201110103620A CN102254597A CN 102254597 A CN102254597 A CN 102254597A CN 201110103620 CN201110103620 CN 201110103620 CN 201110103620 A CN201110103620 A CN 201110103620A CN 102254597 A CN102254597 A CN 102254597A
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Abstract
The invention discloses a photovoltaic cable and a manufacture method thereof. A conductor cable core is lapped by an isolated layer through a polyurethane film. An insulation layer and a jacket layer made of polyolefin materials are subjected to extrusion moulding on the periphery of the isolated layer in turn. The conductor cable core is formed by twisting conductive wires leftwards in a regular arrangement way. The ratios of twisted pitch diameters increase progressively by 2 from outer layers to inner layers in turn. The conductive wires are tinned copper monofilaments, or, the two outmost layers are tinned copper monofilaments and the other layers are copper strand wires. The diameter of a hole for clamping the conductor cable core on a mould is 1.05-1.10 times as much as the outside diameter of the conductor cable core. The hole diameter D1 of a mould core of an extrusion mould for extruding and lapping the insulation layer is d+(0.01-0.15). The hole diameter D2 of a mould sleeve is d1+(0.01-0.25). The hole diameter D3 of the mould core of the extrusion mould for extruding and lapping the jacket layer is d1+(0.1-0.3). The hole diameter D4 of the mould sleeve is D1+(0.05-0.15)t. The obtained photovoltaic cable has a round outside diameter and good uniformity and stability.
Description
Technical field
The present invention relates to cable, relate in particular to the photovoltaic cable of solar power system.
Background technology
Along with solar energy generation technology use day by day extensive, also brought opportunity for relative photovoltaic cable industry.Because usually (as high temperature, ultraviolet radiation, ozone, violent variations in temperature and chemical erosion etc.) use under severe environmental conditions of solar energy system, therefore photovoltaic cable must be resisted extreme climate environment, requirement can stand the mechanical shock of blast heavy rain, UV resistant and ozone corrode, and can bear large-scale variations in temperature etc.
Photovoltaic cable of the prior art comprises a conductor cable core, the peripheral order wrap insulate layer and the restrictive coating of conductor cable core.Wherein the conductor cable core generally becomes strand with copper monofilament pack, again strand is carried out multiple strand by regular arrangement or by the mode that boundling is arranged, and becomes the conductor cable core.When wherein twisting again by regular arrangement, the lay ratio of each layer equates that so-called each layer is meant that by regular arrangement the strand quantity of every adjacent two layers differs 6.The conductor cable core of this version has the better simply advantage of manufacturing process, but the profile roundness of gained conductor cable core and the uniformity are good inadequately, also bright inadequately, even at conductor cable core coated outside insulating barrier and restrictive coating, the profile roundness of the photovoltaic cable that obtains and the uniformity are also good inadequately, often are being difficult to satisfy application request aspect stability and the anti-blast heavy rain mechanical shock performance.
Summary of the invention
At above-mentioned prior art problems, the applicant has made research and has improved, and on the basis of a large amount of tests, provides a kind of improved photovoltaic cable and manufacture method thereof, the photovoltaic cable external diameter rounding that obtains, even, bright, stable and anti-blast heavy rain mechanical shock functional.
Technical scheme of the present invention is as follows:
1, photovoltaic cable, comprise the conductor cable core, the conductor cable core is peripheral with the wrapped separator of polyurethane film, the peripheral order of separator extrusion molding parcel is through the insulating barrier of cross-linking radiation polyolefin material and the restrictive coating of described polyolefin material, described conductor cable core is made of by left-hand is stranded conductive filament, and described conductive filament comprises conductive monofilament.The polyolefine material through cross-linking radiation of above-mentioned formation insulating barrier and restrictive coating has low-smoke non-halogen flame-retardant character.
The further technical scheme of the structure of above-mentioned conductor cable core is:
The constituted mode of described conductor cable core is: each layer of conductor cable core is made of by regular structure arranged mode and by left-hand is stranded the tin-coated copper monofilament, the stranded pitch diameter ratio of described conductor cable core outermost layer is 9, and the stranded pitch diameter ratio of all the other each layers is increased progressively to internal layer successively by skin.Optimal cases is that the stranded pitch diameter ratio of each layer of conductor cable core increases progressively 2 by skin successively to internal layer.Above-mentionedly be meant by regular structure arranged mode: the tin-coated copper monofilament quantity of every adjacent two layers differs 6.
Perhaps, each layer of conductor cable core is made of by left-hand is stranded by regular structure arranged mode conductive filament, the constituted mode of described conductor cable core is: wherein the outermost of conductor cable core is two-layer is made of by regular structure arranged mode and by left-hand is stranded the tin-coated copper monofilament, all the other each layers of conductor cable core are made of by regular structure arranged mode and by left-hand is stranded copper strand wire, the stranded pitch diameter ratio of described conductor cable core outermost layer is 9, and the stranded pitch diameter ratio of all the other each layers is increased progressively to internal layer successively by skin.Optimal cases is that the stranded pitch diameter ratio of each layer of conductor cable core increases progressively 2 by skin successively to internal layer.Above-mentionedly be meant by regular structure arranged mode
:The quantity of every adjacent two layers conductive filament differs 6, that is: the two-layer tin-coated copper monofilament quantity of outermost differs 6, differ 6 by the quantity of from outside to inside order second layer tin-coated copper monofilament and the quantity of the 3rd layer of strand, differ 6 since the strand quantity of the 3rd layer of every adjacent two layers by from outside to inside order.
2, the manufacture method of said structure photovoltaic cable, its manufacturing step is as follows:
1) by described structure with wire twisting equipment stranded conductor cable core, wherein the aperture size on the clamping conductor cable core mould is 1.05 ~ 1.10 times of conductor conductor assembly outer diameter design size;
2) at the peripheral wrapped separator of step 1 gained conductor cable core, described separator is the low smoke and zero halogen polyester film material of anti-150 ℃ of high temperature, and wrapped Duplication is more than or equal to 20%;
3) at the insulating barrier and the restrictive coating of the peripheral order of described separator extrusion molding parcel low-smoke halogen-free polyolefin material, described insulating barrier and restrictive coating be cross-linking radiation respectively, obtains finished product; The thickness of described insulating barrier and restrictive coating is respectively greater than 0.8mm, and the degree of eccentricity is respectively less than 10%; The core rod aperture D1=d+ (0.01 ~ 0.15) of the used extrusion die of described extrusion molding wrap insulate layer, supporting with it die sleeve aperture is D2=d1+ (0.01 ~ 0.25), wherein d is the external diameter behind the peripheral wrapped separator of conductor cable core, and d1 is the external diameter behind the extrusion molding wrap insulate layer; The core rod aperture D3=d1+ (0.1 ~ 0.3) of the used extrusion die of described extrusion molding wrap jacket layer, supporting with it die sleeve aperture D4=D1+ (0.05 ~ 0.15) t, wherein t is the thickness of restrictive coating.
Technique effect of the present invention is:
1, the conductor cable core of the product of the present invention strand that the changes prior art structure that tangles again adopts the tin-coated copper monofilament by regular structure arranged mode and press the stranded formation of left-hand; Perhaps, the outermost of conductor cable core is two-layer to be made of by regular structure arranged mode and by left-hand is stranded the tin-coated copper monofilament, and each internal layer of all the other of conductor cable core is made of by regular structure arranged mode and by left-hand is stranded copper strand wire; In above-mentioned two kinds of frame modes of product of the present invention, all press regular structure arranged mode and all press left-hand stranded, skin all includes two-layer tin-coated copper monofilament at least, the stranded pitch diameter ratio of each layer of conductor cable core is increased progressively to internal layer successively by skin, the generally all annealed processing of tin-coated copper monofilament, the quality softness, so make closely knit by the stranded conductor cable core structure that constitutes of above-mentioned two kinds of frame modes, stable, conductor conductor assembly outer diameter rounding, evenly, light, make the conductor cable core have elasticity, conductor cable core bending property is improved, after extrusion molding wrap insulate layer and restrictive coating, the photovoltaic cable external diameter rounding that obtains, evenly, light, the performance of stable and anti-blast heavy rain mechanical shock be improved significantly.
2, the conductor cable core of product of the present invention is peripheral with the wrapped separator of polyurethane film, the peripheral order of separator extrusion molding parcel is through the insulating barrier and the restrictive coating of cross-linking radiation polyolefin material, described polyolefine material through cross-linking radiation has low-smoke non-halogen flame-retardant character, and the ability that makes product of the present invention resist extreme climate environment effectively improves.
3, in the manufacture method of product of the present invention, rationally control the aperture size of clamping conductor cable core on the mould, and the aperture size on reasonable respectively control insulating barrier extruded mould and the restrictive coating extruded mould, further make the structure of conductor cable core and photovoltaic cable closely knit, stable, make the insulating barrier of photovoltaic cable and restrictive coating thickness evenly and photovoltaic cable external diameter rounding, even, bright.
Description of drawings
Fig. 1 is the schematic cross-section of product structure of the present invention.
Embodiment
See Fig. 1, product of the present invention comprises conductor cable core 1, conductor cable core 1 is peripheral with the wrapped separator 2 of polyurethane film, separator 2 peripheral order extrusion molding parcels are through the insulating barrier 3 and the restrictive coating 4 of cross-linking radiation polyolefin material, described conductor cable core 1 is made of by left-hand is stranded conductive filament, and described conductive filament comprises conductive monofilament.The polyolefine material through cross-linking radiation of above-mentioned formation insulating barrier 3 and restrictive coating 4 has low-smoke non-halogen flame-retardant character.
Embodiment 1:
See Fig. 1, the frame mode of conductor cable core 1 is: each layer of conductor cable core 1 is made of by regular structure arranged mode and by left-hand is stranded zinc-plated copper monofilament, the stranded pitch diameter ratio of described conductor cable core 1 each layer is increased progressively to internal layer successively by skin, and optimal cases is that the stranded pitch diameter ratio of each layer of conductor cable core increases progressively 2 by skin successively to internal layer.Above-mentionedly be meant by regular structure arranged mode: the tin-coated copper monofilament quantity of every adjacent two layers differs 6, and is as shown in table 1.
Table 1 cable core lay configuration and parameter
Embodiment 2:
See Fig. 1, the frame mode of its conductor cable core 1 is:
The outermost of conductor cable core 1 is two-layer to be pressed regular structure arranged mode (identical with arrangement shown in the table 1) and is pressed the stranded formation of left-hand by zinc-plated copper monofilament, all the other each layers of conductor cable core 1 are pressed regular structure arranged mode (identical with arrangement shown in the table 1) and are pressed the stranded formation of left-hand by copper strand wire, the stranded pitch diameter ratio of described each layer of conductor cable core is increased progressively to internal layer successively by skin, and optimal cases is that the stranded pitch diameter ratio of each layer of conductor cable core also is to increase progressively 2 successively by skin to internal layer.Above-mentionedly be meant by regular structure arranged mode
:That is: the two-layer tin-coated copper monofilament quantity of outermost differs 6, differs 6 by the quantity of from outside to inside order second layer tin-coated copper monofilament and the quantity of the 3rd layer of strand, differs 6 by from outside to inside order since the strand quantity of the 3rd layer of every adjacent two layers.In the present embodiment, the silk footpath of described zinc-plated copper monofilament sees Table 1, and the line footpath of described copper strand wire design or computational methods is routinely chosen.
The manufacture method of photovoltaic cable product of the present invention, its manufacturing step is as follows:
1) by described structure with wire twisting equipment stranded conductor cable core, wherein the aperture size on the clamping conductor cable core mould is 1.05 ~ 1.10 times of conductor conductor assembly outer diameter design size;
2) at the peripheral wrapped separator of step 1 gained conductor cable core, described separator is anti-150
The low smoke and zero halogen polyester film material of ℃ high temperature, wrapped Duplication is more than or equal to 20%;
3) at the insulating barrier and the restrictive coating of the peripheral order of described separator extrusion molding parcel low-smoke halogen-free polyolefin material, described insulating barrier and restrictive coating be cross-linking radiation respectively, obtains finished product; The thickness of described insulating barrier and restrictive coating is respectively greater than 0.8mm, and the degree of eccentricity is respectively less than 10%; The core rod aperture D1=d+ (0.01 ~ 0.15) of the used extrusion die of described extrusion molding wrap insulate layer, supporting with it die sleeve aperture is D2=d1+ (0.01 ~ 0.25), wherein d is the external diameter behind the peripheral wrapped separator of conductor cable core, and d1 is the external diameter behind the extrusion molding wrap insulate layer; The core rod aperture D3=d1+ (0.1 ~ 0.3) of the used extrusion die of described extrusion molding wrap jacket layer, supporting with it die sleeve aperture D4=D1+ (0.05 ~ 0.15) t, wherein t is the thickness of restrictive coating.
The foregoing description 1 and embodiment 2 all are applicable to described manufacturing step.
Wherein the low-smoke halide-free fireproof composite polyolefine material of insulating barrier and restrictive coating extrusion molding parcel must carry out the crosslinked of electron irradiation mode, crosslinked employing common process, so that the anti-environment capacity of product strengthens, thermoplastic olefin material is converted into thermosetting polyolefin elastomer material.And general crosslinking method is difficult to make material to reach the technical indicator that photovoltaic cable requires, and has only the electron irradiation of selection crosslinking method.Embodiment 1 and embodiment 2 choose the halogen-free flameproof photovoltaic cable irradiation insulation layered material (model FPV120-1) of anti-150 ℃ of ambient temperatures and the halogen-free flameproof photovoltaic cable irradiation protective cover material (model FPV120-2) of anti-150 ℃ of ambient temperatures.
The lay ratio ecto-entad of conductor adopts the rule of " adding 2 ", that is: inside from outermost layer, every layer of lay ratio is followed successively by 9,11,13,15,17,19,21 ..., the conductor that so makes also makes conductor cable core smooth in appearance, Stability Analysis of Structures, flexible.
When the conductor cable core was stranded, the apolegamy of mould was very crucial, will be directly connected to the presentation quality of conductor and the performance of cable.Aperture as selected mould is bigger than normal, can cause twisted wire to jump silk, and pitch is inhomogeneous, and conductor is rounding not, and the conductor diameter fluctuation is bigger; And the mould aperture is less than normal, can cause twisted wire to block up, and breaks, and it is difficult to wear silk, even conductor occurs and be the ring shape, and the tin pull-up falls, and D.C. resistance is defective.Through repeated calculation and trial-production, select the mould aperture to be of a size of 1.05 ~ 1.10 times of Theoretical Calculation conductor assembly outer diameter, stranded cable core surface-brightening, the pitch that goes out is even, and conductor assembly outer diameter rounding, does not evenly have the silk of jumping, burr, fracture of wire, drawing-down phenomenon.
Wrap up about the insulating barrier of cable core and the extrusion molding of restrictive coating:
Because the environment for use temperature height of photovoltaic cable, consider from insulation, sheath heat radiation angle, insulation thickness and jacket thickness are not suitable for blocked up, but both thickness all should can not see Table 2 corresponding to the insulating barrier of table 1 cable core of the present invention and the embodiment parameter of restrictive coating less than 0.8 mm yet.The insulation thickness of photovoltaic cable and jacket thickness should be even, and the degree of eccentricity should be not more than 10%.
Table 2
When extruding insulating barrier, should note following some: a. uses the special-purpose extrusion screw rod of the less low smoke and zero halogen material of compression ratio, surpasses for the date of manufacture and extrudes after one month Insulation Material should be dried processing in advance again.When b. extruding, the equipment heating and cooling system must be working properly, and each is distinguished the temperature setting and meets technological requirement.C. drive the preincubation time (be meant the instrument indicated temperature reaches after the technological requirement temperature produce during this period of time) to driving must not be less than 40 min; If the centre is changed the rule colour changing and the Insulation Material in the screw rod should be released above 10 min downtime.D. the slowly raising speed of driving notes observing motor load undesired should the parking immediately if discovering device turns round in the boosting velocity procedure.E. insulation is to adopt squash type to extrude, the mould apolegamy is with reference to insulation core rod aperture D1=d+ (0.01～0.15), insulator die cover aperture D2=d1+ (0.01～0.25), d are the external diameter behind the peripheral wrapped separator of conductor cable core, and d1 is the external diameter behind the extrusion molding wrap insulate layer.
When extruding restrictive coating, with the vistanex is base-material, adds halogen-free flame retardants and other modifier routinely, should note when extruding following some: should be before a. extrudes at (60 ± 5) ℃ following preheating 4 h, remove the moisture of raw material surface adsorption, to avoid occurring sheath section pore phenomenon.B. according to machine utilization, adjust linear velocity and screw speed, preferably screw speed is transferred to 90% of rated speed, the main frame electric current transfers to 80% of rated current, makes material not too high at the pressure of fuselage, plastifies under the sufficient condition and extrudes.E. strictly control the temperature in each district of extruder and the cooling of screw rod and fuselage well, guaranteeing suitably to reduce extrusion temperature under the material condition abundant, plasticizing uniformly, avoid causing the auxiliary agent in the raw material to decomposite lower-molecular substance, thereby produce phenomenons such as pore and outward appearance be rough because of overheated.C. extrusion die: sheath core rod aperture D3=d1+ (0.1～0.3), sheath die sleeve aperture D4=D1+ (0.05～0.15) t, wherein t is the thickness of sheath.
Claims (6)
1. photovoltaic cable, it is characterized in that: comprise the conductor cable core, the conductor cable core is peripheral with the wrapped separator of polyurethane film, the peripheral order of separator extrusion molding parcel is through the insulating barrier of cross-linking radiation polyolefin material and the restrictive coating of described polyolefin material, described conductor cable core is made of by left-hand is stranded conductive filament, and described conductive filament comprises conductive monofilament.
2. by claim requirement 1 described photovoltaic cable, the constituted mode that it is characterized in that described conductor cable core is: each layer of conductor cable core is made of by regular structure arranged mode and by left-hand is stranded the tin-coated copper monofilament, the stranded pitch diameter ratio of described conductor cable core outermost layer is 9, and the stranded pitch diameter ratio of all the other each layers is increased progressively to internal layer successively by skin.
3. by claim requirement 2 described photovoltaic cables, it is characterized in that the stranded pitch diameter ratio of described each layer of conductor cable core increases progressively 2 by skin successively to internal layer.
4. by claim requirement 1 described photovoltaic cable, each layer that it is characterized in that the conductor cable core is made of by left-hand is stranded by regular structure arranged mode conductive filament, the constituted mode of described conductor cable core is: wherein the outermost of conductor cable core is two-layer is made of by regular structure arranged mode and by left-hand is stranded the tin-coated copper monofilament, all the other each layers of conductor cable core are made of by regular structure arranged mode and by left-hand is stranded copper strand wire, the stranded pitch diameter ratio of described conductor cable core outermost layer is 9, and the stranded pitch diameter ratio of all the other each layers is increased progressively to internal layer successively by skin.
5. by claim requirement 4 described photovoltaic cables, it is characterized in that the stranded pitch diameter ratio of described each layer of conductor cable core increases progressively 2 by skin successively to internal layer.
6. by the manufacture method of the described structured light luff cable of claim 1～5, it is characterized in that manufacturing step is as follows:
1) by described structure with wire twisting equipment stranded conductor cable core, wherein the aperture size of clamping conductor cable core is 1.05 ~ 1.10 times of conductor conductor assembly outer diameter design size on the mould;
2) at the peripheral wrapped separator of step 1 gained conductor cable core, described separator is the low smoke and zero halogen polyester film material of anti-150 ℃ of high temperature, and wrapped Duplication is more than or equal to 20%;
3) wrap up the insulating barrier and the restrictive coating of low-smoke halogen-free polyolefin material at the peripheral order of described separator extrusion molding, described insulating barrier and restrictive coating be cross-linking radiation respectively, obtain finished product, the thickness of described insulating barrier and restrictive coating is respectively greater than 0.8mm, and the degree of eccentricity is respectively less than 10%; The core rod aperture D1=d+ (0.01 ~ 0.15) of the used extrusion die of described extrusion molding wrap insulate layer, supporting with it die sleeve aperture is D2=d1+ (0.01 ~ 0.25), wherein d is the external diameter behind the peripheral wrapped separator of conductor cable core, and d1 is the external diameter behind the extrusion molding wrap insulate layer; The core rod aperture D3=d1+ (0.1 ~ 0.3) of the used extrusion die of described extrusion molding wrap jacket layer, supporting with it die sleeve aperture D4=D1+ (0.05 ~ 0.15) t, wherein t is the thickness of restrictive coating.
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| CN 201110103620 CN102254597A (en) | 2011-04-25 | 2011-04-25 | Photovoltaic cable and manufacture method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337283A (en) * | 2013-06-21 | 2013-10-02 | 河南开启电力实业有限公司 | Low-smoke zero-halogen flame-retardant photovoltaic cable and manufacture method thereof |
| CN104157357A (en) * | 2014-07-24 | 2014-11-19 | 安徽瑞之星电缆集团有限公司 | Low-smoke zero-halogen solar photovoltaic cable |
| CN104183305A (en) * | 2014-08-26 | 2014-12-03 | 山东华凌电缆有限公司 | Electric wire and cable for high-speed train and production method |
| CN104900345A (en) * | 2015-06-10 | 2015-09-09 | 浙江秦山电缆有限公司 | Production process for photovoltaic cable with high electric conductivity |
| CN107610811A (en) * | 2017-10-18 | 2018-01-19 | 中天科技装备电缆有限公司 | A kind of rat-and-ant proof, high radiating photovoltaic cable and preparation method thereof |
| CN113066605A (en) * | 2021-03-24 | 2021-07-02 | 瑞旭实业有限公司 | Aluminum conductor photovoltaic cable capable of replacing copper conductor and processing method |
| CN113764130A (en) * | 2021-09-06 | 2021-12-07 | 安徽国信电缆科技股份有限公司 | Environment-friendly cable for solar photovoltaic system |
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| CN201166996Y (en) * | 2007-11-11 | 2008-12-17 | 远东电缆有限公司 | Twist resistant rubber cover flexible cable for wind power generation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337283A (en) * | 2013-06-21 | 2013-10-02 | 河南开启电力实业有限公司 | Low-smoke zero-halogen flame-retardant photovoltaic cable and manufacture method thereof |
| CN104157357A (en) * | 2014-07-24 | 2014-11-19 | 安徽瑞之星电缆集团有限公司 | Low-smoke zero-halogen solar photovoltaic cable |
| CN104183305A (en) * | 2014-08-26 | 2014-12-03 | 山东华凌电缆有限公司 | Electric wire and cable for high-speed train and production method |
| CN104900345A (en) * | 2015-06-10 | 2015-09-09 | 浙江秦山电缆有限公司 | Production process for photovoltaic cable with high electric conductivity |
| CN107610811A (en) * | 2017-10-18 | 2018-01-19 | 中天科技装备电缆有限公司 | A kind of rat-and-ant proof, high radiating photovoltaic cable and preparation method thereof |
| CN113066605A (en) * | 2021-03-24 | 2021-07-02 | 瑞旭实业有限公司 | Aluminum conductor photovoltaic cable capable of replacing copper conductor and processing method |
| CN113764130A (en) * | 2021-09-06 | 2021-12-07 | 安徽国信电缆科技股份有限公司 | Environment-friendly cable for solar photovoltaic system |
| CN113764130B (en) * | 2021-09-06 | 2023-12-19 | 安徽国信电缆科技股份有限公司 | Environment-friendly cable for solar photovoltaic system |
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Application publication date: 20111123 |