CN212010478U - Direct current power cable for photovoltaic system - Google Patents
Direct current power cable for photovoltaic system Download PDFInfo
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- CN212010478U CN212010478U CN202021261355.3U CN202021261355U CN212010478U CN 212010478 U CN212010478 U CN 212010478U CN 202021261355 U CN202021261355 U CN 202021261355U CN 212010478 U CN212010478 U CN 212010478U
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- Prior art keywords
- protective
- power cable
- photovoltaic system
- sheath
- middle clamping
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- 230000001681 protective effect Effects 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 2
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 17
- 238000000576 coating method Methods 0.000 abstract description 17
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 4
- 238000005253 cladding Methods 0.000 abstract 3
- 230000006978 adaptation Effects 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004719 irradiation crosslinked polyethylene Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a direct current power cable for photovoltaic system, including two parallel arrangement's sinle silk, cladding in two respectively insulating layer outside the sinle silk, cladding in two respectively restrictive coating and protective sheath outside the insulating layer, two link to each other through the intermediate junction strip between the restrictive coating, the protective sheath includes but two protection half covers of lock, the inboard of protection half cover be equipped with two with the arc wall of the surface adaptation of restrictive coating, the inboard of protection half cover is located and is provided with a plurality of well card strips along the length direction interval between two arc walls, the intermediate junction strip is provided with a plurality of well draw-in grooves along the length direction interval, and two protection half covers cladding are respectively in the both sides of restrictive coating, and the well draw-in groove on the intermediate junction strip is gone into from both sides card respectively to well card strip in the middle of two protection half covers. The utility model provides the high shock resistance of cable has reduced the maintenance cost.
Description
Technical Field
The utility model relates to a photovoltaic cable technical field, concretely relates to direct current power cable for photovoltaic system.
Background
The existing photovoltaic cable comprises a single-core cable and a double-core cable, wherein the double-core cable is provided with two wire cores, the two wire cores are sequentially coated with an insulating layer and a sheath layer respectively, the two sheath layers are connected together, and the single-core cable only has one wire core, so that the double-core cable is more convenient to wire relative to the single-core cable.
During installation and maintenance, cables can be routed over sharp edges of the roof structure, while the cables must withstand pressure, bending, tension, cross-tensile loads, and strong impacts. If the cable sheath is not strong enough, the cable insulation layer will be damaged seriously, thereby affecting the service life of the whole cable, or causing the problems of short circuit, fire hazard, personnel injury danger and the like.
Moreover, the cable is often in a severe outdoor environment and can cause aging damage of the sheath layer and the insulating layer after being subjected to ultraviolet irradiation for a long time, the whole cable needs to be scrapped and replaced after the sheath layer and the insulating layer are damaged, and the maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a photovoltaic is direct current power cable for system to improve the shock resistance of cable, reduce the maintenance cost.
The utility model provides a DC power cable for a photovoltaic system, which comprises two wire cores arranged in parallel, an insulating layer respectively coated outside the two wire cores, two sheath layers respectively coated outside the insulating layer, and a protective sleeve connected with the sheath layers, the protective sleeve comprises two protective half sleeves capable of being buckled, two arc grooves matched with the outer surfaces of the sheath layers are arranged on the inner sides of the protective half sleeves, a plurality of middle clamping strips are arranged between the two arc grooves on the inner sides of the protective half sleeves at intervals along the length direction, the two sheath layers are connected through a middle connecting strip, the middle connecting strip is provided with a plurality of middle clamping grooves at intervals along the length direction, two protective half sleeves are respectively coated on the two sides of the sheath layer, and the middle clamping strip in the middle of the two protective half sleeves is clamped into the middle clamping groove in the middle connecting strip from two sides respectively.
Furthermore, a pair of middle clamping bars respectively connected with the two protective half sleeves are inserted into one middle clamping groove, the length of the middle clamping groove is equal to the sum of the lengths of the pair of middle clamping bars inserted into the middle clamping groove, and the two middle clamping bars of each pair of middle clamping bars are connected in a buckling mode.
Further, the both edges of half cover inboard of protection are provided with a plurality of limit draw-in grooves along the length direction interval, the both sides of restrictive coating are equipped with the edge connection strip, the edge connection strip is provided with a plurality of limit draw-in grooves along the length direction interval, and the limit draw-in groove on the edge connection strip is gone into from both sides card respectively to the limit draw-in groove at two half cover edges of protection.
Furthermore, a pair of side clamping strips respectively connected with the two protective half sleeves are inserted into one side clamping groove, the length of each side clamping groove is equal to the sum of the lengths of the pair of side clamping strips inserted into the side clamping groove, and the two side clamping strips of each pair of side clamping strips are connected in a buckling manner.
Further, the insulating layer is formed by extruding irradiation cross-linked polyethylene material outside the wire core.
Furthermore, the sheath layer is formed by extruding and wrapping a 125 ℃ irradiation crosslinking halogen-free low-smoke flame-retardant elastomer material outside the insulating layer.
Further, the protective sleeve is made of a polypropylene material.
The utility model has the advantages that: this application is with protective sheath outside the jacket layer, the protective sheath is to its inside restrictive coating, insulating layer and sinle silk form the protection, and then reduce external force to the restrictive coating, the impact of insulating layer and sinle silk, the shock resistance of cable has been improved, and protective sheath can protect restrictive coating and insulating layer in it to avoid sunshine, wind blows, drench, insulating layer and restrictive coating are difficult ageing destruction, and the protective sheath comprises two half covers of protection, two half covers of protection are fixed in the intermediate junction strip through well bayonet joint, not only can make protective sheath and restrictive coating combine to become integrative protection, and still can dismantle the change to it after the ageing destruction of protective sheath, and need not change whole cable is whole, the maintenance cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the embodiment of the present invention with the protective cover removed;
fig. 3 is a schematic structural view of a protection half-sleeve according to an embodiment of the present invention;
fig. 4 is an assembly diagram between the protection half-sleeve and the middle connecting strip/edge connecting strip according to the embodiment of the present invention.
In the figure, 10-wire core; 20-an insulating layer; 30-a sheath layer; 31-intermediate connecting strips; 32-middle card slot; 33-edge connecting strips; 34-side card slot; 40-protective sleeve; 41-protective half sleeve; 42-an arc-shaped groove; 43-middle card bar; 44-edge snap strip.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are merely used to more clearly illustrate the technical solutions of the present embodiments, and therefore, the following embodiments are only used as examples, and the protection scope of the present embodiments is not limited thereby.
As shown in fig. 1-4, an embodiment of the present invention provides a dc power cable for a photovoltaic system, which includes two parallel cable cores 10, two insulating layers 20 respectively coated outside the two cable cores 10, two sheath layers 30 respectively coated outside the two insulating layers 20, and a protective sheath 40.
Specifically, the insulation layer 20 is formed by extruding radiation cross-linked polyethylene material outside the wire core 10. The sheath layer 30 is formed by extruding and wrapping the 125 ℃ irradiation crosslinking halogen-free low-smoke flame-retardant elastomer material outside the insulating layer 20. The protective sleeve 40 is made of polypropylene.
Referring to fig. 1-3, two sheath layers 30 are connected through an intermediate connecting strip 31, a protective sleeve 40 includes two half protective sleeves 41 capable of being buckled, the inner sides of the half protective sleeves 41 are provided with two arc-shaped grooves 42 adapted to the outer surfaces of the sheath layers 30, the inner sides of the half protective sleeves 41 are positioned between the two arc-shaped grooves 42 and provided with a plurality of middle clamping strips 43 at intervals along the length direction, the intermediate connecting strip 31 is provided with a plurality of middle clamping grooves 32 at intervals along the length direction, the two half protective sleeves 41 are respectively coated on two sides of the sheath layers 30, and the middle clamping strips 43 in the middle of the two half protective sleeves 41 are respectively clamped into the middle clamping grooves 32 on the intermediate connecting strip 31 from two sides.
This application overlaps protective sheath 40 outside restrictive coating 30, protective sheath 40 is to its inside restrictive coating 30, insulating layer 20 and sinle silk 10 form the protection, and then reduce external force to restrictive coating 30, the impact of insulating layer 20 and sinle silk 10, the shock resistance of cable has been improved, and, protective sheath 40 can protect restrictive coating 30 and insulating layer 20 in it to avoid sunshine, the wind blows, rain, insulating layer 20 and the difficult ageing destruction of restrictive coating 30, and protective sheath 40 comprises two half covers 41 of protection, two half covers 41 of protection are fixed in intermediate junction strip 31 through well calorie strip 43 joint, not only can make protective sheath 40 combine into the integrative protection with restrictive coating 30, and can also dismantle the change to it after the ageing destruction of protective sheath 40, and need not change whole cable entirely, the maintenance cost is reduced.
In this embodiment, referring to fig. 4, a pair of middle clamping strips 43 respectively connected to the two protective half sleeves 41 are inserted into one middle clamping groove 32, the length of the middle clamping groove 32 is equal to the sum of the lengths of the pair of middle clamping strips 43 inserted into the middle clamping groove 32, and the two middle clamping strips 43 of each pair of middle clamping strips 43 are connected in a snap-fit manner, so that the middle clamping strips 43 at two sides can be prevented from exiting from the middle clamping groove 32, and the tightness of the combination of the two protective half sleeves 41 and the sheath layer 30 is improved.
As a further improvement of the above scheme, a plurality of edge clamping strips 44 are arranged at intervals along the length direction at two edges of the inner side of the protection half sleeve 41, edge connecting strips 33 are arranged at two sides of the sheath layer 30, a plurality of edge clamping grooves 34 are arranged at intervals along the length direction at the edge connecting strips 33, and the edge clamping strips 44 at the edges of the two protection half sleeves 41 are respectively clamped into the edge clamping grooves 34 on the edge connecting strips 33 from two sides. Adopt above-mentioned structure, the edge at two protection half cover 41 edges passes through limit draw-in groove 34 of limit card strip 44 joint on edge connecting strip 33, can prevent that the edge of protection half cover 41 from taking place the turn-ups, has further improved the compactness that protective sheath 40 and restrictive coating 30 combined.
Similarly, referring to fig. 4, a pair of side clips 44 respectively connected to the two protection half sleeves 41 is inserted into one side clip 34, the length of the side clip 34 is equal to the sum of the lengths of the pair of side clips 44 inserted into the side clip 34, and the two side clips 44 of each pair of side clips 44 are connected by a snap fit, so that the side clips 44 on both sides can be prevented from being withdrawn from the side clip 34.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present embodiment, and not for limiting the same; although the present embodiment has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solutions of the embodiments of the present embodiment, and all of them should be covered in the claims and the specification of the present embodiment.
Claims (7)
1. A DC power cable for a photovoltaic system comprises two parallel wire cores, insulating layers respectively coated outside the two wire cores, and sheath layers respectively coated outside the two insulating layers, wherein the two sheath layers are connected, it is characterized by also comprising a protective sleeve, the protective sleeve comprises two protective half sleeves which can be buckled, the inner side of the protective half sleeve is provided with two arc grooves matched with the outer surface of the sheath layer, a plurality of middle clamping strips are arranged between the two arc grooves at intervals along the length direction at the inner side of the protective half sleeve, the two sheath layers are connected through a middle connecting strip, the middle connecting strip is provided with a plurality of middle clamping grooves at intervals along the length direction, two protective half sleeves are respectively coated on the two sides of the sheath layer, and the middle clamping strip in the middle of the two protective half sleeves is clamped into the middle clamping groove in the middle connecting strip from two sides respectively.
2. The direct-current power cable for the photovoltaic system according to claim 1, wherein a pair of middle clamping bars respectively connected with the two protective half sleeves are inserted into one of the middle clamping grooves, the length of the middle clamping groove is equal to the sum of the lengths of the pair of middle clamping bars inserted into the middle clamping groove, and the two middle clamping bars of each pair of middle clamping bars are connected in a snap-fit manner.
3. The direct-current power cable for the photovoltaic system according to claim 1 or 2, wherein a plurality of edge clamping strips are arranged at intervals along the length direction at two edges of the inner side of the protective half sleeve, edge connecting strips are arranged at two sides of the sheath layer, a plurality of edge clamping grooves are arranged at intervals along the length direction at the edge connecting strips, and the edge clamping strips at the edges of the two protective half sleeves are clamped into the edge clamping grooves on the edge connecting strips from the two sides respectively.
4. The direct-current power cable for the photovoltaic system according to claim 3, wherein a pair of side clips respectively connected to the two protective half sleeves are inserted into one of the side clips, the length of the side clip is equal to the sum of the lengths of the pair of side clips inserted into the side clip, and the two side clips of each pair of side clips are connected by a snap fit.
5. The dc power cable for photovoltaic system according to claim 1, wherein the insulation layer is formed by extruding a radiation crosslinked polyethylene material around the core.
6. The direct-current power cable for the photovoltaic system according to claim 1, wherein the sheath layer is formed by extruding a 125 ℃ irradiation cross-linking halogen-free low-smoke flame-retardant elastomer material outside the insulating layer.
7. The dc power cable for photovoltaic system according to claim 1, wherein the protective sheath is made of polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021261355.3U CN212010478U (en) | 2020-07-01 | 2020-07-01 | Direct current power cable for photovoltaic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021261355.3U CN212010478U (en) | 2020-07-01 | 2020-07-01 | Direct current power cable for photovoltaic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212010478U true CN212010478U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021261355.3U Expired - Fee Related CN212010478U (en) | 2020-07-01 | 2020-07-01 | Direct current power cable for photovoltaic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212010478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927845A (en) * | 2021-02-01 | 2021-06-08 | 浙江正泰电缆有限公司 | Water-blocking power cable and manufacturing method thereof |
-
2020
- 2020-07-01 CN CN202021261355.3U patent/CN212010478U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927845A (en) * | 2021-02-01 | 2021-06-08 | 浙江正泰电缆有限公司 | Water-blocking power cable and manufacturing method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201124 |