CN203882717U - Communication electric cable suitable for photovoltaic system - Google Patents
Communication electric cable suitable for photovoltaic system Download PDFInfo
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- CN203882717U CN203882717U CN201420226833.5U CN201420226833U CN203882717U CN 203882717 U CN203882717 U CN 203882717U CN 201420226833 U CN201420226833 U CN 201420226833U CN 203882717 U CN203882717 U CN 203882717U
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Abstract
The utility model discloses a communication electric cable suitable for a photovoltaic system. The communication electric cable comprises a cable core; a cable core protection layer, a shielding layer, an inner protection sleeve and an outer protection sleeve are orderly wrapped around the outer side of the cable core from inside to outside; the cable core comprises a number of wire pairs that are intertwisted, and each wire pair comprises two insulating wires that are twisted in a paired manner. Each insulating wire comprises a copper conductor and an insulating layer wrapped around the copper conductor. The shielding layer comprises a tinsel layer and a metal mesh grid which is wrapped outside the tinsel layer. The communication electric cable suitable for the photovoltaic system is advantageous in that 1, the cable core protection layer is arranged outside the cable core, and the electric cable is improved in structure stability in a condition where environment alternately changes; 2, double layer shielding and the double layer protection sleeve are adopted, and the electric cable is improved in external-force-resisting capability and environment resistant capability and is prolonged in service life; 3, a thermoplastic polymer outer protection sleeve where carbon black is added is adopted, ultraviolet rays in photovoltaic system utilization environment can be effectively resisted, and the wire cable can be prevented from ageing failure.
Description
Technical field
The utility model relates to telecommunication cable technical field, particularly a kind of telecommunication cable that is applicable to photovoltaic system.
Background technology
The communications cable adopting in photovoltaic system, is mainly used in the aspect such as information gathering, equipment control of system.Because the common floor space of photovoltaic system is wider, in outdoor environment, sunshine is strong, and the telecommunication cable that is therefore applicable to photovoltaic system should have good long Distance Transmission performance, adaptive capacity to environment and anti-uv-ray.There is following shortcoming and defect in the existing telecommunication cable for photovoltaic system:
1, inhomogeneous, the decay of impedance and return loss are large, 50 meters of effective propagation path less thaies;
2, structural instability, can cause the inner tension force that produces of cable because the temperature of outdoor environment replaces variation, and structure changes, and causes the transmittability of cable to decline rapidly;
When 3, being impacted and trampling in construction and use procedure, structure easily changes, and causes transmittability to decline rapidly;
4, anti-uv-ray is poor, easy ageing failure under the sunshine environment of photovoltaic system.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is: the impedance of existing photovoltaic telecommunication cable is inhomogeneous, structural instability, and poor to the resistivity of environment, anti-uv-ray is poor, easily ageing failure.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of telecommunication cable that is applicable to photovoltaic system, comprises cable core, and described cable core comprises a plurality of lines pair that twist together, described in each, line is to comprising two pair twists insulated wire together, and the right lay of described line is different; Described cable core outside is enclosed with from inside to outside successively: cable core overcoat, screen, inner sheath and oversheath.
Wherein, described cable core overcoat is polyester belt.
Wherein, described cable core overcoat also comprises band or the bundle layer that is arranged on described polyester belt inner side.
Wherein, described insulated wire comprises copper conductor and is wrapped in the insulating barrier outside described copper conductor.
Wherein, described insulating barrier is polyethylene layer.
Wherein, described screen comprises metal foil layer and is wrapped in the metal net outside described metal foil layer.
Wherein, between described metal foil layer and metal net, be also provided with the drain wire of arranging along cable core length direction.
Wherein, described inner sheath is thermoplastic polymer inner sheath.
Wherein, described oversheath is the thermoplastic polymer oversheath that is filled with carbon black.
(3) beneficial effect
Technique scheme tool has the following advantages: 1, a plurality of lines in cable core between adopt different lay pair twists together, line between signal transmission disturb less; 2, at cable core, cable core overcoat is set outward, has effectively improved environment and replaced under situation of change, the stability of the construction of cable; 3, adopt double layer screen and duplex sheath, improve ability and the resistance to environment capacity of cable opposing external force, increase useful life; 4, adopt the thermoplastic polymer oversheath that adds carbon black, can effectively resist the ultraviolet ray in photovoltaic system environment for use, prevent cable ageing failure.
Accompanying drawing explanation
Fig. 1 is a kind of cross-sectional view that is applicable to the telecommunication cable of photovoltaic system of the utility model.
Wherein, 1, copper conductor; 2, insulating barrier; 3, line pair; 4, cable core overcoat; 5, metal foil layer; 6, drain wire; 7, metal net; 8, inner sheath; 9, oversheath.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
Figure 1 shows that a kind of telecommunication cable that is applicable to photovoltaic system that the utility model provides, comprising: cable core, cable core overcoat 4, screen, inner sheath 8 and oversheath 9; The making of cable core comprises: first insulating barrier 2 is evenly extruded in one heart to the outer formation insulated wire of copper conductor 1, then two insulated wires is formed to line to 3 to 3 strands together, finally the line of two or more different laies is twisted together and makes cable core 3; After cable core has been made, cable core overcoat 4 is wrapped in to cable core outside, then metal foil layer 5 is wrapped in outside cable core, by drain wire 6 outside cable length direction is arranged in metal foil layer 5; Arrange after drain wire 6, the metal foil layer wrapping 5 and drain wire 6 one are reinstated to metal establishment net and wrap up, finally in metal establishment net outside, extrude the duplex sheath being formed by inner sheath 8 and oversheath 9.Wherein, inner sheath 8 and oversheath 9 preferably adopt polyethylene, polyvinyl chloride or low-smoke halogen-free polyolefin material to make, to improve resistance to environment capacity and the anti-uv-ray of duplex sheath; And in oversheath 9, also fill or added carbon black, to further improve the new ability of its opposing ultraviolet.
By several specific embodiments, further explain the technical solution of the utility model below:
Embodiment mono-:
At single core copper conductor 1 outer wrapping polyethylene layer 2, form insulated wire; Every two insulated wires, to being twisted into a line to 3, twist together formation core with two pairs of different lines of lay to 3; The outer protective polyethylene cover 9 that superscribes successively polyester belt, aluminium foil, proof copper-wire braided net, polyethylene inner sheath 8 outward and contain carbon black at core, and along cable core length defence line cloth, be set up copper wire drain wire 6 between aluminium foil and proof copper-wire braided net.Wherein aluminium foil is as internal shield, and proof copper-wire braided net is as outer shielding layer.
Embodiment bis-: at single core copper conductor 1 outer wrapping polyethylene layer 2, form insulated wire; Every two insulated wires, to being twisted into a line to 3, twist together formation core with three pairs of different lines of lay to 3; At core, superscribe successively the polyvinyl chloride oversheath 9 of pricking yarn, polyester belt, aluminium foil, proof copper-wire braided net, polyvinyl chloride inner sheath 8 and containing carbon black outward, and along cable core length defence line cloth, be set up copper wire drain wire 6 between aluminium foil and proof copper-wire braided net.Wherein, prick yarn as the internal layer of cable core overcoat 4, polyester belt is as the skin of cable core overcoat 4; Aluminium foil is as internal shield, and proof copper-wire braided net is as outer shielding layer.
Bundle yarn is Polyester Fibers, and himself is soft, is mainly used in the structure of differentiation and stable cable core, prevents that cable core from deformation occurring under external force, affects signal transmission.
Embodiment tri-:
At single core copper conductor 1 outer wrapping polyethylene layer 2, form insulated wire; Every two insulated wires, to being twisted into a line to 3, twist together formation core with four pairs of different lines of lay to 3; The low-smoke halogen-free polyolefin oversheath 9 that superscribes successively band, polyester belt, aluminium foil, proof copper-wire braided net, low-smoke halogen-free polyolefin inner sheath 8 outward and contain carbon black at core, and along cable core length defence line cloth, be set up copper wire drain wire 6 between aluminium foil and proof copper-wire braided net.Wherein, band is as the internal layer of cable core overcoat 4, and polyester belt is as the skin of cable core overcoat 4; Aluminium foil is as internal shield, and proof copper-wire braided net is as outer shielding layer.
Band belongs to non-hygroscopic PE (polyethylene) material, mainly plays and tightens and be convenient to the effects such as chromatography, to prevent that cable core from deformation occurring under external force, affects signal transmission.
Line in above-described embodiment cable core carries out stranded to the different lay of 3 employings, the line of this different laies has impedance stabilization, line to features such as 3 cross-talks are little to the cable core of 3 compositions.
Insulating barrier 2 adopts polythene materials, makes copper conductor 1 have electric property little, the feature such as compression strength is large of stablizing, decay.
In the cable core of telecommunication cable, have a plurality of lines to 3 and transmission line when longer, because each line is larger to the loop area of 3 formations, line between 3 crosstalk and external interference all more serious; And signal meeting in the process of transmission, copper conductor 1 also can externally send certain electromagnetic wave, and the line of different laies is to the 3 wave frequencies differences of sending, and line is to interfering with each other and resonating just smaller between 3.Therefore select the line in cable core is mutually stranded according to certain tightness to 3.Like this, just each line can be divided into several little loops to the loop of 3 formations, that in each loop, inducts crosstalks and disturbs the part of can cancelling out each other, thereby reaches the object of crosstalking and disturbing that reduces cable integral body.So a plurality of lines are poor larger to the lay between 3, its low frequency antijamming capability just stronger, line is also just less to crosstalking of 3 inside, the performance of transmission data is also just better.
At cable core outer cladding cable core overcoat 4, stablize cable core structure, avoid the electric parameter of cable core to change, polyester belt has good insulation property simultaneously, can reduce the impact of metal screen layer on copper conductor 1 signal transmission, effectively improve the stability that environment replaces cable performance under situation of change.
Adopt metal foil layer 5 and metal net 7 double-layer shielding structures, solved the anti-interference problem of low-and high-frequency, guarantee the stability of transfer of data; Simultaneously braiding structure can be further fixing cable core, guarantee install and follow-up use procedure in cable performance stable.
Inner sheath 8 and oversheath 9 all adopt polyethylene, polyvinyl chloride or low-smoke halogen-free polyolefin material, have good insulation preformance, resistance to compression, the feature such as water-fast, further stablize the Data Transmission Feature of cable core.
The specialist additives such as carbon black, ultra-violet absorber in oversheath 9, have also been added, there is oil resistant, low temperature resistant, uvioresistant, acid and alkali-resistance, the feature such as fire-retardant, soft, solved photovoltaic telecommunication cable in the comparatively severe shorter problem in local useful life of environment, cable can be used for a long time under the comparatively harsh environment of condition, improve its useful life.
As can be seen from the above embodiments, the utility model is by adopting the line of different laies to be twisted into cable core to 3, makes the impedance stabilization of photovoltaic telecommunication cable, line less to 3 cross-talks; Cable core outer wrapping cable core overcoat 4, guarantee to replace the stable of photovoltaic telecommunication cable performance under situation of change at environment; By adopting double layer screen and duplex sheath structure, make photovoltaic telecommunication cable there are good antijamming capability, anti-pressure ability etc.; Sheath adopts weatherability material, and in thermoplastic polymer oversheath 9, has added the additives such as carbon black, ultra-violet absorber, and the adaptive capacity to environment of photovoltaic property cable is increased substantially, and can comparatively under rugged environment, use for a long time.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection range of the present utility model.
Claims (9)
1. a telecommunication cable that is applicable to photovoltaic system, is characterized in that, comprises cable core, and described cable core comprises a plurality of lines pair that twist together, and described in each, line is to comprising two pair twists insulated wire together, and the right lay of described line is different; Described cable core outside is enclosed with from inside to outside successively: cable core overcoat, screen, inner sheath and oversheath.
2. a kind of telecommunication cable that is applicable to photovoltaic system as claimed in claim 1, is characterized in that, described cable core overcoat is polyester belt.
3. a kind of telecommunication cable that is applicable to photovoltaic system as claimed in claim 2, is characterized in that, described cable core overcoat also comprises band or the bundle layer that is arranged on described polyester belt inner side.
4. a kind of telecommunication cable that is applicable to photovoltaic system as claimed in claim 1, is characterized in that, described insulated wire comprises copper conductor and is wrapped in the insulating barrier outside described copper conductor.
5. a kind of telecommunication cable that is applicable to photovoltaic system as claimed in claim 4, is characterized in that, described insulating barrier is polyethylene layer.
6. a kind of telecommunication cable that is applicable to photovoltaic system as claimed in claim 1, is characterized in that, described screen comprises metal foil layer and is wrapped in the metal net outside described metal foil layer.
7. a kind of telecommunication cable that is applicable to photovoltaic system as claimed in claim 6, is characterized in that, between described metal foil layer and metal net, is also provided with the drain wire of arranging along cable core length direction.
8. a kind of telecommunication cable that is applicable to photovoltaic system as claimed in claim 1, is characterized in that, described inner sheath is thermoplastic polymer inner sheath.
9. a kind of telecommunication cable that is applicable to photovoltaic system as claimed in claim 1, is characterized in that, described oversheath is the thermoplastic polymer oversheath that is filled with carbon black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226833.5U CN203882717U (en) | 2014-05-05 | 2014-05-05 | Communication electric cable suitable for photovoltaic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226833.5U CN203882717U (en) | 2014-05-05 | 2014-05-05 | Communication electric cable suitable for photovoltaic system |
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| Publication Number | Publication Date |
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| CN203882717U true CN203882717U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420226833.5U Active CN203882717U (en) | 2014-05-05 | 2014-05-05 | Communication electric cable suitable for photovoltaic system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790021A (en) * | 2016-04-28 | 2016-07-20 | 昆山爱光电子有限公司 | Anti-interference solar frequency converter connecting wire harness |
| CN108831621A (en) * | 2018-07-13 | 2018-11-16 | 安徽新科电缆集团股份有限公司 | A kind of anti-aging railways cable with flame retarding function |
| CN112687427A (en) * | 2020-12-16 | 2021-04-20 | 深圳市速联技术有限公司 | High-temperature-resistant signal transmission line and processing method |
| CN114937522A (en) * | 2022-06-14 | 2022-08-23 | 广东远光电缆实业有限公司 | Water-resistant double-layer co-extrusion sheath solar photovoltaic cable |
-
2014
- 2014-05-05 CN CN201420226833.5U patent/CN203882717U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790021A (en) * | 2016-04-28 | 2016-07-20 | 昆山爱光电子有限公司 | Anti-interference solar frequency converter connecting wire harness |
| CN108831621A (en) * | 2018-07-13 | 2018-11-16 | 安徽新科电缆集团股份有限公司 | A kind of anti-aging railways cable with flame retarding function |
| CN112687427A (en) * | 2020-12-16 | 2021-04-20 | 深圳市速联技术有限公司 | High-temperature-resistant signal transmission line and processing method |
| CN114937522A (en) * | 2022-06-14 | 2022-08-23 | 广东远光电缆实业有限公司 | Water-resistant double-layer co-extrusion sheath solar photovoltaic cable |
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