CN209880229U - Waterproof directly-buried photovoltaic cable - Google Patents
Waterproof directly-buried photovoltaic cable Download PDFInfo
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- CN209880229U CN209880229U CN201921104612.XU CN201921104612U CN209880229U CN 209880229 U CN209880229 U CN 209880229U CN 201921104612 U CN201921104612 U CN 201921104612U CN 209880229 U CN209880229 U CN 209880229U
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Abstract
The utility model discloses a but waterproof direct-burried photovoltaic cable, include by interior cable conductor core, semiconduction water-stop layer, insulating layer, the interior sheath of preventing fires, anticorrosive wearing layer, armor and the resistant ultraviolet radiation oversheath that sets gradually from outside: the cable core is formed by twisting a plurality of conductors, and a watertight filling layer is filled in gaps among the conductors. The cable core adopts a water-blocking conductor structure: the watertight filling layer is filled between the conductors and the semiconductor watertight layer wrapping the cable core, so that the cable is endowed with excellent water resistance. The hidden danger that the photovoltaic cable is influenced by water vapor and short circuit can be avoided, the service life of a cable lead is longer, and the safety and reliability of the cable work are improved.
Description
Technical Field
The utility model relates to a photovoltaic wire and cable technical field specifically is a but waterproof direct-burried photovoltaic cable.
Background
In recent years, solar technology as a green energy source, and the photovoltaic power generation industry as a renewable clean energy source thereof have been rapidly developed. The photovoltaic power generation technology is not only dependent on the performance of the solar component, but also does not leave a photovoltaic or solar special cable for transmitting electric energy.
At present, although the photovoltaic or solar special cable has been produced in mass production for a long time, the main performance of the cable is still limited to the original common low-smoke halogen-free insulating material product. The working environment of the photovoltaic industry is severe, the performances of ultraviolet resistance, aging resistance, water resistance, mechanical strength and the like of the existing cable product are poor, and the cable product is easy to damage in severe environment after being used for a long time, and has defects and great potential safety hazards.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical defect that the performance of above-mentioned photovoltaic cable is difficult to satisfy the demand in present stage, the utility model provides a but waterproof direct burial photovoltaic cable, it has excellent performance such as block water, fire prevention corrosion resistance.
In order to solve the above problem, the utility model discloses realize according to following technical scheme:
waterproof directly-buried photovoltaic cable, include by interior cable conductor core, semiconduction water-stop layer, insulating layer, the interior sheath of preventing fires, anticorrosive wearing layer, armor and the resistant ultraviolet radiation oversheath that sets gradually from outside:
the cable core is formed by twisting a plurality of conductors, and a watertight filling layer is filled in gaps among the conductors.
Preferably, the watertight filling layer is made of a semiconductive watertight composition.
Preferably, the conductor conforms to the fifth category of tin-plated soft copper conductors in GB/T3956-.
Preferably, the semi-conductive water-tight layer and the insulating layer are wrapped on the cable core through double-layer co-extrusion.
Preferably, the insulating layer is made of an irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material.
Preferably, the fireproof inner protection layer is made of fireproof mud.
Preferably, the anticorrosion wear-resistant layer is a high-strength anticorrosion belt wrapped on the fireproof inner protection layer.
Preferably, the armor is a stainless steel wire armor.
Preferably, the ultraviolet radiation resistant outer sheath is made of irradiation cross-linked low-smoke halogen-free flame retardant polyolefin.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a but waterproof direct-burried photovoltaic cable, its cable core has adopted the conductor structure that blocks water: the watertight filling layer is filled between the conductors and the semiconductor watertight layer wrapping the cable core, so that the cable is endowed with excellent water resistance. The hidden danger that the photovoltaic cable is influenced by water vapor and short circuit can be avoided, the service life of a cable lead is longer, and the safety and reliability of the cable work are improved.
2. This photovoltaic cable is provided with the interior sheath of fire prevention, when the conflagration breaing out, avoids the cable core to receive the circuit short circuit harm that flame burns out and cause, ensures the security and the permanence of cable operation.
3. This photovoltaic cable is provided with the armor, and it has good corrosion resistance, anti external pulling force, pressure performance, can remove the poling from and lay, has increased the radiating rate of conductor sinle silk, has improved the current-carrying capacity.
4. The combination of the anti-corrosion wear-resistant layer and the ultraviolet radiation resistant outer sheath of the photovoltaic cable improves the aging resistance, corrosion resistance and ultraviolet radiation resistance of the photovoltaic cable. By combining the advantages, the cable can be used for a long time in harsh environment.
Drawings
The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:
fig. 1 is a schematic cross-sectional view of a waterproof directly-buried photovoltaic cable of the present invention;
FIG. 2 is a cross-sectional view of a conductive cable core of the present invention;
in the figure:
1-a cable core, 11-a conductor and 12-a watertight filling layer;
2-semi-conductive watertight layer;
3-an insulating layer;
4-fireproof inner protection layer;
5-corrosion and wear resistant layer;
6-an armor layer;
7-ultraviolet radiation resistant outer sheath.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in fig. 1, the utility model discloses a preferred structure of waterproof directly-buried photovoltaic cable.
As shown in fig. 1, the waterproof directly-buried photovoltaic cable comprises a cable conducting core 1, a semi-conductive watertight layer 2, an insulating layer 3, a fireproof inner protection layer 4, an anticorrosion wear-resistant layer 5, an armor layer 6 and an ultraviolet radiation-resistant outer sheath 7 which are sequentially arranged from inside to outside.
The cable core 1 is a conductor bundle formed by twisting a plurality of conductors 11, and watertight filling layers 12 are filled between the conductors and between the cable core 1 and the semi-conductive watertight layer 2.
As an example, the watertight filling layer 12 is a semiconductive watertight composition. The semiconductive watertight composition may be a resin composition made of a base polymer containing a crosslinked polyethylene, a water-absorbing polymer, acetylene black or furnace black as carbon black, or carbon black as a by-product of carbon black. Or semiconductive water gel.
Specifically, each conductor 11 conforms to the fifth category of tin-plated soft copper conductors in GB/T3956-. The manufacturing process of the cable core 1 is as follows: first, the individual conductors are pretreated and the outer surfaces of the conductors are coated with a semi-conductive watertight composition. Then twisting and bundling a plurality of wires, and coating the semi-conductive watertight composition on the conductor bundle again; finally, the conductor is ensured to be compact in toughness in a compound twisting mode of the stranded wires. The semiconductive watertight composition is then applied again so that the gaps between the conductor monofilaments, the conductive cord core 1 and the semiconductive watertight layer 2 are separated by the semiconductive watertight composition to form said watertight filling layer 12.
The embodiment is not limited to the coating method of the watertight and semiconductive resistor water gel, and the watertight and semiconductive resistor water gel may be disposed on the conductor or the conductor bundle by dipping or spraying.
Furthermore, a double-layer co-extrusion process is adopted, the semi-conductive watertight layer 2 and the insulating layer 3 are extruded and wrapped on the cable core 1 through a double-layer co-extrusion die, and the watertight filling layer 12 is combined, so that the cable is endowed with excellent water resistance. And sufficient pressure is applied through double-layer co-extrusion to ensure that the watertight filling layer 12 is tightly filled.
In one example, the semi-conductive watertight layer 2 is also a semi-conductive watertight composition.
Further, the insulating layer 3 is made of an irradiation cross-linking low-smoke halogen-free flame-retardant polyolefin material.
Preferably, the outer sheath 7 is also made of irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin.
The cross-linked low-smoke halogen-free flame-retardant polyolefin can endow the photovoltaic cable with excellent high-low temperature alternation resistance, strong ultraviolet resistance, friction resistance and salt mist resistance. Meanwhile, the ultraviolet radiation resistant outer sheath 7 also has the characteristics of good hydrolysis resistance, high insulating electrical performance, rat and ant prevention, low smoke, zero halogen and flame retardance. The double-deck setting of resistant ultraviolet radiation oversheath 7 and insulating layer 3 lets the photovoltaic cable can use under adverse circumstances for a long time, satisfies the photovoltaic system's that open-air laid needs.
In one embodiment, the fireproof inner protection layer 4 is made of fireproof mud, and is extruded on the insulating layer 3 by using an extrusion device to form a fireproof layer. This structure is closely knit, soft, and when the conflagration breaing out, the interior sheath of preventing fires 4 can form ceramic flame retardant coating the very first time when receiving outside high temperature, gives cable fire behaviour, prevents the conflagration to the destruction of middling pressure cable, and the interior sheath of guarantee fire prevention 4 inner structure is complete effective, increases the life and the security performance of cable.
In one embodiment, the anti-corrosion wear-resistant layer 5 is a high-strength anti-corrosion tape wrapped on the fireproof inner sheath layer 4. Has good corrosion resistance and wear resistance, and further protects the fireproof inner protection layer 4 from being damaged.
In one embodiment, the armor layer 6 is a stainless steel wire armor layer 6, which has good corrosion resistance, external tension resistance and pressure resistance, improves the mechanical properties of the photovoltaic cable, and the photovoltaic cable can be directly buried and is not easy to damage.
As can be seen from the above, the waterproof directly-buried photovoltaic cable provided by the utility model has not only superior water blocking performance; also has the advantages of excellent flame retardance, fire resistance, weather resistance and corrosion resistance, and good mechanical strength. The photovoltaic system's that very big satisfied present stage user demand is applicable to the abominable environment of laying of multiple environment.
Other structures of the waterproof directly-buried photovoltaic cable described in the present embodiment are referred to in the prior art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a but waterproof direct-burried photovoltaic cable which characterized in that includes by interior cable conductor core, semi-conductive water-stop layer, insulating layer, the interior sheath of preventing fires, anticorrosive wearing layer, armor and the resistant ultraviolet radiation oversheath that sets gradually from outside:
the cable core is formed by twisting a plurality of conductors, and a watertight filling layer is filled in gaps among the conductors.
2. The waterproof directly-buried photovoltaic cable of claim 1, characterized in that:
the watertight filling layer is made of a semiconductive watertight composition.
3. The waterproof directly-buried photovoltaic cable of claim 1, characterized in that:
the conductor conforms to the fifth category of tin-plated soft copper conductor in GB/T3956-.
4. The waterproof directly-buried photovoltaic cable of claim 1, characterized in that:
the semi-conductive water-tight layer and the insulating layer are wrapped on the cable conducting core through double-layer co-extrusion.
5. The waterproof directly-buried photovoltaic cable of claim 1, characterized in that:
the insulating layer is made of irradiation cross-linking low-smoke halogen-free flame-retardant polyolefin material.
6. The waterproof directly-buried photovoltaic cable of claim 1, characterized in that:
the fireproof inner protection layer is made of fireproof mud.
7. The waterproof directly-buried photovoltaic cable of claim 1, characterized in that:
the anti-corrosion wear-resistant layer is a high-strength anti-corrosion belt wrapped on the fireproof inner protection layer.
8. The waterproof directly-buried photovoltaic cable of claim 1, characterized in that:
the armor layer is a stainless steel wire armor layer.
9. The waterproof directly-buried photovoltaic cable of claim 1, characterized in that:
the ultraviolet radiation resistant outer sheath is made of irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921104612.XU CN209880229U (en) | 2019-07-15 | 2019-07-15 | Waterproof directly-buried photovoltaic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921104612.XU CN209880229U (en) | 2019-07-15 | 2019-07-15 | Waterproof directly-buried photovoltaic cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209880229U true CN209880229U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921104612.XU Active CN209880229U (en) | 2019-07-15 | 2019-07-15 | Waterproof directly-buried photovoltaic cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114927264A (en) * | 2022-05-31 | 2022-08-19 | 中天科技装备电缆有限公司 | Waterproof photovoltaic cable and preparation method thereof |
-
2019
- 2019-07-15 CN CN201921104612.XU patent/CN209880229U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114927264A (en) * | 2022-05-31 | 2022-08-19 | 中天科技装备电缆有限公司 | Waterproof photovoltaic cable and preparation method thereof |
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