CN220569448U - High flame retardant photovoltaic cable - Google Patents

Abstract

The utility model discloses a high-flame-retardance photovoltaic cable, which relates to the technical field of cables and aims to solve the problem that the cable is easy to burn in high temperature and other environments in the use process of the cable because the cable is not subjected to flame retardance treatment in the scheme. The high-voltage cable comprises a plurality of conductive wires, wherein an inner flame-retardant layer is arranged on the outer side of each conductive wire, an inner insulating layer is filled between each conductive wire and the corresponding inner flame-retardant layer, and a sealing assembly is arranged on the outer side of each inner insulating layer; the sealing assembly comprises a water stop belt arranged at the outer side of the inner insulating layer, and an outer protective layer is arranged at the outer side of the water stop belt. The inner flame-retardant layer and the outer flame-retardant layer form the cable, so that the whole cable has higher flame-retardant capacity; through the waterstop that sets up, can when outer inoxidizing coating takes place to damage, when liquid wets the waterstop, make the waterstop meet water inflation to sealed the gap that produces because of outer inoxidizing coating breakage between waterstop and the outer inoxidizing coating, make whole device have higher waterproof capability.

Description

High flame retardant photovoltaic cable

Technical Field

The utility model relates to the field of cables, in particular to a high-flame-retardance photovoltaic cable.

Background

Solar technology will become one of the future green energy technologies, solar energy or Photovoltaic (PV) is increasingly widely used in china, besides the rapid development of government-supported photovoltaic power plants, private investors are actively building factories, solar modules sold worldwide are planned to be put into production, photovoltaic cables are used for transmitting high-power, and photovoltaic cables with higher safety can improve living safety.

The utility model discloses a single-core insulated overhead cable (publication number: CN 219122993U), which comprises an inner protection layer, wherein the inner side of the inner protection layer is connected with an inner support bar, the inner part of the inner protection layer is wrapped with a conductive inner core, a gap between the inner protection layer and the conductive inner core is filled with a glass fiber rope, the outer part of the inner protection layer is sleeved with a fixed pipe, and the outer part of the fixed pipe is provided with a long gap.

In the process of realizing the utility model, the inventor finds that at least the following problems exist in the cable, because the use environment of the photovoltaic cable is complex (such as high temperature and ultraviolet radiation), the requirement on the high temperature resistance and flame retardance of the photovoltaic cable is high, and the cable flame retardance is not treated in the scheme, so that the condition that the cable is burnt easily occurs in the environment of high temperature and the like in the use process of the cable.

Disclosure of Invention

In order to improve the problem that the cable is easy to burn under the environment of high temperature and the like in the use process of the cable because the scheme does not relate to the treatment of the flame retardance of the cable.

The utility model provides a high-flame-retardance photovoltaic cable, which adopts the following technical scheme:

the high-flame-retardance photovoltaic cable comprises a plurality of conductive wires, wherein the plurality of conductive wires are surrounded into a ring shape, an inner flame-retardant layer is arranged on the outer side of each conductive wire, an inner insulating layer is filled between each conductive wire and the corresponding inner insulating layer, and a sealing assembly is arranged on the outer side of each inner insulating layer;

the sealing assembly comprises a water stop belt arranged on the outer side of the inner insulating layer, and an outer protective layer is arranged on the outer side of the water stop belt.

By adopting the technical scheme, the cable core structure is formed by the conductive wire and the inner insulating layer, and the cable core and the whole cable have higher flame retardant capability under the arrangement of the inner flame retardant layer and the outer flame retardant layer; through the waterstop that sets up, can when outer inoxidizing coating takes place to damage, when liquid wets the waterstop, make the waterstop meet water inflation to sealed the gap that produces because of outer inoxidizing coating breakage between waterstop and the outer inoxidizing coating, make whole device have higher waterproof capability.

Optionally, an outer insulating layer is adhered between the water stop and the inner insulating layer.

Through adopting above-mentioned technical scheme, through the outer insulating layer that sets up, promote the insulativity of whole cable, the cable of being convenient for uses under different environment.

Optionally, an inner protective layer is installed between the water stop and the outer protective layer.

Through adopting above-mentioned technical scheme, through the interior inoxidizing coating that sets up, interior inoxidizing coating and outer inoxidizing coating all adopt polyolefin material to make, and polyolefin material has higher corrosion resistance, insulating nature, promotes the practicality of whole cable once more.

Optionally, a steel wire sheath is arranged on the outer side of the outer protective layer.

Through adopting above-mentioned technical scheme, can make the cable in the damage of some scratches of reply through the steel wire sheath that sets up, perhaps the cable is when being stung by the insect pest in the field, can not lead to inside structure damage easily, realizes the protection to whole cable structure.

Optionally, an outer flame retardant layer is integrally connected to the outer side of the steel wire sheath.

Through adopting above-mentioned technical scheme, adhere to the surface at the steel wire sheath through outer fire-retardant layer, make outer fire-retardant layer cooperation inner fire-retardant layer, improve the fire resistance of cable.

Optionally, a plurality of conductive wires are stranded and formed.

Through adopting above-mentioned technical scheme, through the transposition setting, have higher compactness between the messenger's conducting wire, promote the tensile strength ability of cable.

Optionally, two lag is installed to outside symmetry that outer fire-retardant layer is close to cable tip, and one of them lag and body coupling, and the connecting block is all installed on the surface of two lag, passes through bolted connection between two connecting blocks on two lag, a plurality of groups of recess have all been seted up to the inside of lag, the internal connection of recess has the locating shaft that is "T" type, the top of locating shaft runs through the recess and stretches out, the mid-section surface mounting of locating shaft has the button with recess sliding connection, pass through spring fixed connection between button and the recess.

Through adopting above-mentioned technical scheme, when two cables are after connecting, merge through two lag to it is fixed with adjacent connecting block through the bolt on the connecting block, two lag constitution ring body seals the junction of two cables, under the pressure of spring, the epaxial round block of location can extrude on another cable under the elastic tension of spring, just so can form the protection to the junction after connecting two cables, with the weak problem of easy damage when receiving the pressure of junction that reduces.

Optionally, a plurality of fixed plates are installed to the outside equidistant of lag, the one end of fixed plate is provided with the grip block, the flange is installed to the one end that the grip block is close to the fixed plate, the flange rotates to be installed on the fixed plate, and passes through bolted connection between flange and the fixed plate.

Through adopting above-mentioned technical scheme, after two cable connection, rotate along the fixed plate through the flange, make the one end of grip block can fix a position on the cable in the lag outside, then fix the locking on the fixed plate through the bolt with the flange, just this moment formed the secondary centre gripping to the cable of lag internal positioning to promote two cable stability after connecting.

In summary, the utility model has the following beneficial effects:

the cable core structure is formed by the conductive wires and the inner insulating layer, and the cable core and the whole cable have certain flame retardant capability under the arrangement of the inner flame retardant layer and the outer flame retardant layer; through the waterstop that sets up, can when outer inoxidizing coating takes place to damage, when liquid wets the waterstop, make the waterstop meet water inflation to sealed the gap that produces because of outer inoxidizing coating breakage between waterstop and the outer inoxidizing coating, make whole device have higher waterproof capability.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of the present utility model.

Fig. 2 is a cross-sectional view of the conductive wire and inner insulating layer structure of the present utility model.

FIG. 3 is a cross-sectional view of the structure of the inner flame retardant layer of the present utility model.

FIG. 4 is a cross-sectional view of a protective jacket structure according to the present utility model.

Reference numerals illustrate:

1. a conductive wire; 2. an inner insulating layer; 3. an inner flame retardant layer; 4. an outer insulating layer; 5. a water stop; 6. an inner protective layer; 7. an outer protective layer; 8. a steel wire sheath; 9. an outer flame retardant layer; 10. a protective sleeve; 11. a groove; 12. positioning a shaft; 13. a spring; 14. a fixing plate; 15. a clamping plate; 16. a flange; 17. and (5) connecting a block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-3, a high flame retardant photovoltaic cable comprises a plurality of conductive wires 1, wherein the plurality of conductive wires 1 are enclosed into a ring shape, the plurality of conductive wires 1 are twisted and formed, and the conductive wires 1 are provided with higher compactness through twisting, so that the tensile resistance of the cable is improved. Meanwhile, an inner flame-retardant layer 3 is arranged on the outer side of the conductive wire 1, the inner flame-retardant layer 3 is made of polyvinyl chloride material and has high flame retardance, so that the whole cable can have high flame retardance, an inner insulating layer 2 is filled between the conductive wire 1 and the inner insulating layer 3, and a sealing component is arranged on the outer side of the inner insulating layer 2.

Wherein, seal assembly is including installing the waterstop 5 in the insulating layer 2 outside, and the outside of waterstop 5 is provided with outer inoxidizing coating 7 to through the inside of a plurality of conductor 1 in the inner insulating layer 3, and seal the inside space of inner flame retardant coating 3 through the insulating layer 2 in, and inner insulating layer 2 and conductor 1 fixed connection, make conductor 1 and inner insulating layer 2 constitute the cable core structure, and under the setting of inner flame retardant coating 3, make the cable core have higher fire-retardant ability.

Simultaneously, through the waterstop 5 that sets up, can when outer inoxidizing coating 7 takes place to damage, when liquid wets waterstop 5, make waterstop 5 meet water inflation to seal the gap that produces because of outer inoxidizing coating 7 breakage between waterstop 5 and the outer inoxidizing coating 7, make whole device have higher waterproof capacity.

Referring to fig. 1, an outer insulation layer 4 is provided between a water stop 5 and an inner insulation layer 3 in a bonding manner, the outer insulation layer 4 is made of PVC material, and insulation of the whole cable is improved through the provided outer insulation layer 4, so that the cable is convenient to use in different environments. Wherein, install interior inoxidizing coating 6 between waterstop 5 and the outer inoxidizing coating 7, through interior inoxidizing coating 6 that sets up, interior inoxidizing coating 6 all adopts polyolefin material to make with outer inoxidizing coating 7, and polyolefin material has higher corrosion resistance, insulating nature, promotes the practicality of whole cable once more.

Referring to fig. 1, the outer side of the outer protective layer 7 is provided with a steel wire sheath 8, and the cable can be made to cope with damage caused by scraping through the arranged steel wire sheath 8, or the cable cannot easily cause damage to the internal structure when being bitten by insect damage in the field, so that the protection of the whole cable structure is realized.

Simultaneously, be connected with outer flame retardant coating 9 in the outside of steel wire sheath 8 an organic whole, outer flame retardant coating 9 is made through polyvinyl chloride material, and integrated into one piece means integrated into one piece, installs at the surface of steel wire sheath 8 through outer flame retardant coating 9, causes whole cable burning with preventing external fire when initially using to protect whole cable, promote the fire-retardant strength of whole cable.

In the scheme, the whole cable is of an integral structure from inside to outside, so that the whole cable has higher flame retardance, water resistance and corrosion resistance.

Example 2

Referring to fig. 1 and 4, two protecting jackets 10 are symmetrically installed on the outer side of the outer flame-retardant layer 9 near the end of the cable, one protecting jacket 10 is integrally connected with the other protecting jacket 9, meanwhile, connecting blocks 17 are installed on the surfaces of the two protecting jackets 10, and the two connecting blocks 17 on the two protecting jackets 10 are connected through bolts.

Wherein, all seted up a plurality of groups recess 11 in the inside of lag 10, the inside of recess 11 is connected with and is the location axle 12 of "T" type, and the top of location axle 12 runs through recess 11 and stretches out. In addition, a round block which is in sliding connection with the groove 11 is arranged on the surface of the middle part of the positioning shaft 12, and the round block is fixedly connected with the groove 11 through a spring 13.

When two cables are connected, the two protective sleeves 10 are combined, the adjacent connecting blocks 17 are fixed through bolts on the connecting blocks 17, the two protective sleeves 10 form a ring body to seal the connecting position of the two cables, under the pressure of the spring 13, round blocks on the positioning shaft 12 can be extruded on the other cable (the cable at the position is the cable which is not integrated with the protective sleeve 10 initially) under the elastic tension of the spring 13, and therefore the connecting position can be protected after the two cables are connected, so that the problem that the connecting position is weak and is easy to damage when being stressed is solved, and the high-temperature fireproof performance can be further enhanced.

Referring to fig. 1 and 4, a plurality of fixing plates 14 are installed at equal intervals on the outer side of the protection sleeve 10, a clamping plate 15 is provided at one end of the fixing plate 14, a flange 16 is installed at one end of the clamping plate 15 close to the fixing plate 14, the flange 16 is rotatably installed on the fixing plate 14, and the flange 16 is connected with the fixing plate 14 through bolts.

After two cables are connected, the flange 16 rotates along the fixed plate 14, one end of the clamping plate 15 can be positioned on the cable outside the protective sleeve 10, then the flange 16 is fixedly locked on the fixed plate 14 through bolts, and at the moment, the cables positioned inside the protective sleeve 10 are clamped secondarily, so that the stability of the two cables after connection is improved.

The implementation principle of the utility model is as follows: the cable core structure is formed by the conductive wire 1 and the inner insulating layer 2, the cable core has certain flame retardant capability under the arrangement of the inner flame retardant layer 3, and when the outer protective layer 7 is damaged, the water stop belt 5 is expanded when the water stop belt 5 is soaked by liquid through the arranged water stop belt 5, so that a gap between the water stop belt 5 and the outer protective layer 7, which is generated by the breakage of the outer protective layer 7, is sealed, and the whole device has higher waterproof capability;

when two cables are connected, a ring body is formed by the two protective sleeves 10 to seal the joint of the two cables, under the pressure of the spring 13, the round block on the positioning shaft 12 can be extruded on the other cable under the elastic tension of the spring 13, one end of the clamping plate 15 can be positioned on the cable outside the protective sleeve 10 by rotating the flange 16 along the fixed plate 14, then the flange 16 is fixedly locked on the fixed plate 14 by bolts, and at the moment, the cable positioned inside the protective sleeve 10 is secondarily clamped to improve the stability of the two cables after connection.

Finally, it should be noted that: in the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. The utility model provides a high fire-retardant photovoltaic cable, includes a plurality of conductor wire (1), a plurality of conductor wire (1) enclose into a ring shape, the outside of conductor wire (1) is provided with interior fire-retardant layer (3), it has inner insulating layer (2), its characterized in that to fill between conductor wire (1) and interior fire-retardant layer (3): a sealing component is arranged on the outer side of the inner insulating layer (2);

the sealing assembly comprises a water stop belt (5) arranged on the outer side of the inner insulating layer (2), and an outer protective layer (7) is arranged on the outer side of the water stop belt (5).

2. The high flame retardant photovoltaic cable of claim 1, wherein: an outer insulating layer (4) is arranged between the water stop belt (5) and the inner insulating layer (3) in a bonding way.

3. The high flame retardant photovoltaic cable of claim 1, wherein: an inner protective layer (6) is arranged between the water stop belt (5) and the outer protective layer (7).

4. The high flame retardant photovoltaic cable of claim 1, wherein: the outer side of the outer protective layer (7) is provided with a steel wire sheath (8).

5. The high flame retardant photovoltaic cable of claim 4, wherein: the outer side of the steel wire sheath (8) is integrally connected with an outer flame-retardant layer (9).

6. The high flame retardant photovoltaic cable of claim 1, wherein: and a plurality of conductive wires (1) are stranded and formed.

7. The high flame retardant photovoltaic cable of claim 5, wherein: two lag (10) are installed to outside symmetry that outer flame retardant coating (9) are close to cable tip, and one lag (10) and (9) body coupling wherein, connecting block (17) are all installed on the surface of two lag (10), pass through bolted connection between two connecting blocks (17) on two lag (10), a plurality of groups recess (11) have all been seted up to the inside of lag (10), the internal connection of recess (11) has locating shaft (12) that are "T" type, the top of locating shaft (12) runs through recess (11) and stretches out, the mid-surface mounting of locating shaft (12) have with recess (11) sliding connection's button, pass through spring (13) fixed connection between button and the recess (11).

8. The high flame retardant photovoltaic cable of claim 7, wherein: a plurality of fixed plates (14) are installed in the outside equidistant of lag (10), one end of fixed plate (14) is provided with grip block (15), flange (16) are installed to one end that grip block (15) are close to fixed plate (14), flange (16) are installed on fixed plate (14) in the rotation, and pass through bolted connection between flange (16) and fixed plate (14).