CN214428366U - Photovoltaic cable with good tensile and flame-retardant properties - Google Patents

Abstract

The utility model discloses a photovoltaic cable that tensile fire resistance is good, including first bearer layer, the inside of first bearer layer is equipped with the cable that the equidistance distributes, the lateral wall of cable bonds there is the first insulating layer, the lateral wall cladding of first insulating layer has the metallic shield layer, the inside packing of first bearer layer has the resin ball, the lateral wall of resin ball laminate in the lateral wall of metallic shield layer; the utility model discloses in through setting up the steel wire weaving layer, and then increase the inside holistic intensity of this device, utilize the strengthening rib at the vertical tensile strength who increases this device, utilize the expansion zone to increase the horizontal tensile strength of this device, come to cushion the external force that the cable received through the resin ball, the resin ball produces deformation, and then avoided the cable to use the back for a long time, because the inside tension of cable, make the phenomenon of rupture appear in the cable, and then avoided short circuit and conflagration, people's the security of the lives and property has finally been guaranteed.

Description

Photovoltaic cable with good tensile and flame-retardant properties

Technical Field

The utility model relates to a photovoltaic cable technical field specifically is a photovoltaic cable that tensile fire resistance is good.

Background

Building a cost-effective profitable photovoltaic power plant represents the most important goal and core competitiveness of all solar manufacturers, and in fact, profitability does not depend only on the efficiency or high performance of the solar module itself, nor does it leave a list of components that seem to have no direct relationship to the module.

The characteristics of photovoltaic cable are decided by its special insulating material of cable and sheath material, and in fact during installation and maintenance, the cable can be laid on roof structure's sharp limit, and the cable must bear pressure, buckle, tension, cross tensile load and powerful impact simultaneously, if cable sheath intensity is not enough, then the cable insulation layer will receive serious damage to influence the life of whole cable, or lead to the appearance of short circuit, conflagration and personnel injury danger scheduling problem.

The existing photovoltaic cable also has certain problems:

after the existing photovoltaic cable is laid, due to the fact that tensile strength is insufficient, after the cable is used for a long time, due to internal tension of the cable, the cable is broken, short circuit and fire are further caused, and life and property safety of people is threatened finally;

secondly, current photovoltaic cable is after the conflagration is triggered in the short circuit, because the material characteristic of cable for the cable burns fast to along with a large amount of black cigarette and toxic substance appear, polluted the environment to a certain extent, caused huge economic loss, for this reason, provide a photovoltaic cable that tensile fire resistance is good.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a photovoltaic cable that tensile fire resistance is good to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a photovoltaic cable with good tensile and flame-retardant properties comprises a first bearing layer, cables distributed equidistantly are arranged inside the first bearing layer, a first insulating layer is bonded on the outer side wall of each cable, a metal shielding layer is wrapped on the outer side wall of the first insulating layer, resin balls are filled inside the first bearing layer, the outer side wall of each resin ball is bonded on the outer side wall of the metal shielding layer, reinforcing ribs arranged equidistantly are fixedly connected to the outer side wall of the first bearing layer, a steel wire woven layer is fixedly connected to the outer side wall of each reinforcing rib, a second isolating layer is wrapped on the outer side wall of each steel wire woven layer, a halogen-free flame-retardant layer is bonded on the outer side wall of the second isolating layer, a first isolating layer is wrapped on the outer side wall of the halogen-free flame-retardant layer, a second bearing layer is sleeved on the outer side wall of the first isolating layer, and a third bearing layer is sleeved on the outer side wall of the second bearing layer, one side of the second bearing layer, which is adjacent to the third bearing layer, is filled with a halogen-free intumescent flame retardant, and the outer side wall of the third bearing layer is sleeved with an outer sheath.

As further preferable in the present technical solution: the outer side wall of the outer sheath is fixedly connected with bulges distributed at equal intervals.

As further preferable in the present technical solution: the outer side wall of the outer sheath is fixedly connected with expansion bands which are arranged at equal intervals.

As further preferable in the present technical solution: the connecting band that the inboard wall of third bearer layer bonded the equidistance and arranged, the connecting band is kept away from one side of third bearer layer bond in the lateral wall of second bearer layer.

As further preferable in the present technical solution: the outer side wall of the third bearing layer is bonded with an inner liner, and the outer side wall of the inner liner is bonded with the inner side wall of the outer sheath.

As further preferable in the present technical solution: the outer side wall of the first isolation layer is coated with a magnetic shielding layer, and the outer side wall of the magnetic shielding layer is bonded to the inner side wall of the second bearing layer.

Compared with the prior art, the beneficial effects of the utility model are that:

firstly, the utility model discloses in through setting up the steel wire weaving layer, and then increase this device internal whole intensity, utilize the strengthening rib to increase this device tensile strength in the vertical, utilize the expansion band to increase this device horizontal tensile strength, come to cushion the external force that the cable received through the resin ball, the resin ball produces deformation, and then avoided the cable after long-term the use, because the internal tension of cable, make the cable appear the phenomenon of rupture, and then avoided short circuit and conflagration, guaranteed people's life and property safety finally;

secondly, the utility model discloses a set up the halogen-free flame retardant layer in the inside of first isolation layer and second isolation layer, through add the halogen-free intumescent flame retardant in the inside of second bearer layer and third bearer layer, utilize the metallic shield layer can produce aluminium trioxide protection protective screen under high temperature, and then protected the cable not damaged, solved the photovoltaic cable after the short circuit causes the conflagration, because the material characteristic of cable, make the cable fast burn, and appear along with a large amount of black smoke and noxious material, polluted the bad situation to a certain extent, caused huge economic loss's problem;

thirdly, the connecting band can not only increase the stability between the second bearing layer and the third bearing layer, but also play a role in supporting;

fourthly, the utility model discloses a set up the magnetic screen layer and can ensure that the cable has safety and stability's electromagnetic property in the use.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic cross-sectional view of a third bearing layer, a connecting band and a second bearing connection structure of the present invention;

fig. 4 is a schematic sectional view of the connection structure of the cable, the first insulating layer and the metal shielding layer according to the present invention.

In the figure: 1. a first carrier layer; 2. a cable; 3. a first insulating layer; 4. a metal shielding layer; 5. a resin ball; 6. reinforcing ribs; 7. a steel wire braid layer; 8. a halogen-free flame retardant layer; 9. a first isolation layer; 10. a second isolation layer; 11. a magnetic shield layer; 12. a second carrier layer; 13. a halogen-free intumescent flame retardant; 14. a third bearing layer; 15. an inner liner layer; 16. an outer sheath; 17. a connecting belt; 18. a protrusion; 19. an expansion band.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides a technical solution: a photovoltaic cable with good tensile and flame retardance comprises a first bearing layer 1, cables 2 distributed equidistantly are arranged inside the first bearing layer 1, a first insulating layer 3 is bonded on the outer side wall of each cable 2, the outer side wall of each first insulating layer 3 is wrapped with a metal shielding layer 4, resin balls 5 are filled inside the first bearing layer 1, the outer side wall of each resin ball 5 is bonded on the outer side wall of each metal shielding layer 4, reinforcing ribs 6 arranged equidistantly are fixedly connected to the outer side wall of each first bearing layer 1, a steel wire weaving layer 7 is fixedly connected to the outer side wall of each reinforcing rib 6, a second isolating layer 10 is wrapped on the outer side wall of each steel wire weaving layer 7, a halogen-free flame retardant layer 8 is bonded on the outer side wall of each second isolating layer 10, a first isolating layer 9 is wrapped on the outer side wall of each halogen-free flame retardant layer 8, a second bearing layer 12 is sleeved on the outer side wall of each first isolating layer 9, and a third bearing layer 14 is sleeved on the outer side wall of each second bearing layer 12, one side of the second bearing layer 12 adjacent to the third bearing layer 14 is filled with a halogen-free intumescent flame retardant 13, and the outer side wall of the third bearing layer 14 is sleeved with an outer sheath 16.

In this embodiment, specifically: the outer side wall of the outer sheath 16 is fixedly connected with protrusions 18 which are distributed at equal intervals; the arrangement of the protrusions 18 can reduce the accumulation of rain and snow on the surface of the outer sheath 16, thereby avoiding the freezing phenomenon on the surface of the device and finally reducing the power loss.

In this embodiment, specifically: the outer side wall of the outer sheath 16 is fixedly connected with expansion bands 19 which are arranged at equal intervals; the provision of the expansion band 19 not only reduces the residence time of rain on the surface of the outer sheath 16, but also increases the tensile strength of the device in the transverse direction.

In this embodiment, specifically: connecting strips 17 which are arranged at equal intervals are bonded on the inner side wall of the third bearing layer 14, and one side of each connecting strip 17, which is far away from the third bearing layer 14, is bonded on the outer side wall of the second bearing layer 12; the provision of the connecting strips 17 not only increases the stability between the second carrier layer 12 and the third carrier layer 14, but also provides a supporting function.

In this embodiment, specifically: the outer side wall of the third bearing layer 14 is bonded with an inner lining layer 15, and the outer side wall of the inner lining layer 15 is bonded with the inner side wall of the outer sheath 16; the provision of the inner liner 15 increases the tightness of the connection between the outer sheath 16 and the third carrier layer 14, thereby increasing the service life of the device.

In this embodiment, specifically: the outer side wall of the first isolation layer 9 is wrapped with a magnetic shielding layer 11, and the outer side wall of the magnetic shielding layer 11 is adhered to the inner side wall of the second bearing layer 12; the provision of the magnetic shield layer 11 ensures that the cable 2 has a safe and stable electromagnetic performance during use.

The working principle or the structure principle, the utility model discloses well metal shielding layer 4 adopts plastic film as the substrate, two-sided coating aluminite powder makes, the material of halogen-free intumescent flame retardant 13 is ammonium polyphosphate, pentaerythritol and zinc borate, the material of first insulating layer 3 is polyethylene, when using, because aluminite powder can absorb a large amount of heat energy when high temperature oxidation, the melting temperature of aluminium is about 660 ℃, and form hot barrier to the formation of aluminium trioxide layer, prevent heat to transmit to inside, the fire source impact force has been slowed down simultaneously, the formation of the inorganic casing of first insulating layer 3 has been protected betterly, the flame retardant action has been played indirectly, and adopt this shielding mode can reduce ground resistance, strengthen the interference-free effect, can regard as the protection cable 2 of keeping off the tide layer again, play waterproof, the anticorrosion effect, when this device receives the exogenic action, resin ball 5 receives the extrusion back of first bearing layer 1, interact between a plurality of resin balls 5, reseed pressure, and then avoided metallic shield layer 4, first insulating layer 3 and cable 2 receive external force extrusion damage, steel wire weaving layer 7 can strengthen the inside stress that can bear of this device, and then increase the tensile strength of this device, it can be fire-retardant when this device is on fire to have nothing steamed intumescent flame retardant 13 and have nothing steamed fire-retardant layer 8, and can not produce substances of poisoning such as black cigarette, and then environmental pollution has been avoided, the tensile strength of this device is strengthened at horizontal direction to connecting band 17, the tensile strength of this device is strengthened at vertical direction to strengthening rib 6, and then the life of this device has been prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a photovoltaic cable that tensile fire resistance is good, includes first bearer layer (1), its characterized in that: the cable (2) distributed at equal intervals is arranged inside the first bearing layer (1), a first insulating layer (3) is bonded on the outer side wall of the cable (2), a metal shielding layer (4) is coated on the outer side wall of the first insulating layer (3), resin balls (5) are filled inside the first bearing layer (1), the outer side wall of each resin ball (5) is bonded on the outer side wall of the metal shielding layer (4), reinforcing ribs (6) arranged at equal intervals are fixedly connected on the outer side wall of the first bearing layer (1), a steel wire weaving layer (7) is fixedly connected on the outer side wall of each reinforcing rib (6), a second isolating layer (10) is coated on the outer side wall of each steel wire weaving layer (7), a halogen-free flame-retardant layer (8) is bonded on the outer side wall of each second isolating layer (10), and a first isolating layer (9) is coated on the outer side wall of each halogen-free flame-retardant layer (8), the outer side wall cover of first isolation layer (9) is equipped with second bearing layer (12), the outer side wall cover of second bearing layer (12) is equipped with third bearing layer (14), second bearing layer (12) with one side that third bearing layer (14) are adjacent is filled there is no steamed intumescent flame retardant (13), the outer side wall cover of third bearing layer (14) is equipped with oversheath (16).

2. The photovoltaic cable with good tensile and flame retardant properties according to claim 1, characterized in that: the outer side wall of the outer sheath (16) is fixedly connected with bulges (18) distributed at equal intervals.

3. The photovoltaic cable with good tensile and flame retardant properties according to claim 1, characterized in that: the outer side wall of the outer sheath (16) is fixedly connected with expansion bands (19) which are arranged at equal intervals.

4. The photovoltaic cable with good tensile and flame retardant properties according to claim 1, characterized in that: the connecting band (17) that the inboard wall bonding of third bearing layer (14) had the equidistance to arrange, connecting band (17) keep away from one side of third bearing layer (14) bond in the lateral wall of second bearing layer (12).

5. The photovoltaic cable with good tensile and flame retardant properties according to claim 1, characterized in that: the outer side wall of the third bearing layer (14) is bonded with an inner lining layer (15), and the outer side wall of the inner lining layer (15) is bonded with the inner side wall of the outer sheath (16).

6. The photovoltaic cable with good tensile and flame retardant properties according to claim 1, characterized in that: the outer side wall of the first isolation layer (9) is coated with a magnetic shielding layer (11), and the outer side wall of the magnetic shielding layer (11) is bonded to the inner side wall of the second bearing layer (12).

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