Anti-impact photovoltaic cable

Abstract

The utility model provides an anti-impact photovoltaic cable, belongs to the technical field of photovoltaic cables, and aims to solve the problems that the temperature of the cable rises and the service life of the photovoltaic cable is seriously influenced due to the fact that the photovoltaic cable works in a high-temperature environment for a long time in the use process of the conventional photovoltaic cable. The filling layer wraps the outer side of a conductive wire core. The insulating layer coats the outer side of the filling layer; the thermal insulation layer wraps the outer side of the insulating layer; the flame-retardant layer coats the outer side of the heat insulation layer; the plurality of connecting rings are fixedly connected to the outer side of the flame-retardant layer; the outer sides of the connecting rings are coated with the wear-resistant layer; the heat insulation mechanism is arranged on the outer side of the wear-resistant layer; the protection mechanism is arranged on the inner side of the wear-resistant layer; through the arrangement of the utility model, the temperature of the cable is prevented from rising sharply after the cable is irradiated by sunlight for a long time, the service life is prolonged, and the use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic cables, and more specifically, particularly relates to an impact-resistant photovoltaic cable. Background Art

[0002] Photovoltaic cables are cables that provide power for solar energy facilities. In photovoltaic systems, photovoltaic cables often need to work in harsh environments of high temperature and ultraviolet radiation. Existing photovoltaic cables are generally composed of a conductive core, an insulation layer, a heat-insulating and flame-retardant layer, and an outer sheath. The heat-insulating and flame-retardant layer can effectively prevent the cable from spontaneously combusting and causing a fire.

[0003] According to the application number: CN201220423440.4, a photovoltaic cable is disclosed, which also includes a conductive core, an insulating layer, a heat-insulating flame-retardant layer and an outer sheath, wherein the conductive core is a conductive core composed of a plurality of tinned monofilaments twisted together, the conductive core is wrapped with an insulating layer composed of 150-degree irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin material, the insulating layer is wrapped with a heat-insulating flame-retardant layer composed of basalt fiber, and the heat-insulating flame-retardant layer is wrapped with an outer sheath composed of ethylene trifluorochloroethylene copolymer. The photovoltaic cable has the advantages of scientific design, high flame retardancy, good weather resistance and long service life.

[0004] Based on the above, during the use of existing photovoltaic cables, since the photovoltaic cables work in a high temperature environment for a long time, the photovoltaic cables are exposed to the sun for a long time, which will cause the cable temperature to rise. When the cable temperature is too high, it will seriously affect the service life of the photovoltaic cables. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an impact-resistant photovoltaic cable to solve the problem that during the use of existing photovoltaic cables, since the photovoltaic cables work in a high-temperature environment for a long time, the photovoltaic cables are exposed to the sun for a long time, which will cause the cable temperature to rise. When the cable temperature is too high, it will seriously affect the service life of the photovoltaic cables.

[0006] The purpose and effect of the impact-resistant photovoltaic cable of the utility model are achieved by the following specific technical means:

[0007] A shock-resistant photovoltaic cable comprises a conductive core, a filling layer, an insulating layer, a heat-insulating layer, a flame-retardant layer, a connecting ring, a wear-resistant layer, a heat-insulating mechanism and a protective mechanism; the filling layer is coated on the outside of the conductive core; the insulating layer is coated on the outside of the filling layer; the heat-insulating layer is coated on the outside of the insulating layer; the flame-retardant layer is coated on the outside of the heat-insulating layer; a plurality of connecting rings are provided, and the plurality of connecting rings are fixedly connected to the outside of the flame-retardant layer; the wear-resistant layer is coated on the outside of a plurality of connecting rings; the heat-insulating mechanism is arranged on the outside of the wear-resistant layer; the protective mechanism is arranged on the inside of the wear-resistant layer.

[0008] Furthermore, the heat insulation mechanism includes: a light-colored outer sheath; the light-colored outer sheath is coated on the outside of the wear-resistant layer.

[0009] Furthermore, the protection mechanism includes: a flame retardant cavity; a plurality of the flame retardant cavities are provided, and the plurality of flame retardant cavities are all opened between the flame retardant layer and the wear-resistant layer, and the flame retardant cavity is annular.

[0010] Furthermore, the protection mechanism also includes: an air nozzle and a one-way inflatable member; the air nozzle is provided in plurality, and the plurality of air nozzles are all fixedly connected to the inner side of the wear-resistant layer, and the air nozzle is communicated with the flame-retardant cavity.

[0011] Furthermore, the protective mechanism also includes: a fixed block, an exhaust hole, a sealing plate, a first air hole, an operating member and a second air hole; the fixed blocks are provided in plurality, and the plurality of fixed blocks are fixedly connected to the inner side of the wear-resistant layer; the exhaust holes are provided in plurality, and the plurality of exhaust holes are respectively opened on the inner sides of the plurality of fixed blocks; the sealing plates are provided in plurality, and the plurality of sealing plates are respectively rotatably connected to the inner sides of the plurality of fixed blocks; the first air holes are provided in plurality, and the plurality of first air holes are respectively opened on the inner sides of the plurality of sealing plates; the operating members are provided in plurality, and the plurality of operating members are respectively fixedly connected to the upper end surfaces of the plurality of sealing plates; the second air holes are provided in plurality, and the plurality of second air holes are respectively opened on the inner sides of the plurality of operating members.

[0012] Furthermore, the protective mechanism also includes: positioning grooves, positioning blocks and compression springs; the positioning grooves are provided in multiple groups, and the multiple groups of positioning grooves are respectively opened on the lower end surfaces of multiple operating parts; the positioning blocks are provided in multiple groups, and the multiple positioning blocks are respectively slidably connected to the inner sides of multiple fixed blocks, and the positioning blocks are spherical; the compression springs are provided in multiple groups, and the multiple compression springs are respectively fixedly connected to the inner sides of multiple fixed blocks, and the upper ends of the multiple compression springs are respectively against the outer sides of the multiple positioning blocks.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model prevents the temperature of the cable from rising sharply after being exposed to sunlight for a long time by setting the heat insulation mechanism. The light-colored outer sheath can reflect sunlight by setting its own color to reduce the absorption of light, thereby achieving the effect of lowering the temperature of the cable, extending the service life and reducing the cost of use; the utility model realizes the protection of the cable by setting the protection mechanism. After the flame retardant cavity is filled with carbon dioxide, the cable itself can have a large buffering capacity, which can effectively prevent the cable from being damaged after being impacted, thereby extending the service life, and the setting of the flame retardant cavity can also extinguish the fire source in the first time when the cable is naturally heated, thereby preventing the occurrence of fire, improving safety and reducing economic losses; the utility model prevents the temperature of the cable from rising sharply after being exposed to sunlight for a long time by setting the above-mentioned mechanism, thereby extending the service life and reducing the cost of use, and also realizes the protection of the cable, extending the service life, improving safety and reducing economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the main body of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the flame retardant cavity of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the main body of the utility model from the front.

[0018] Figure 4 It is a schematic structural diagram of the cross-section of the wear-resistant layer of the utility model.

[0019] Figure 5 It is a structural schematic diagram of the disassembled operating parts of the utility model.

[0020] Figure 6 It is a structural schematic diagram of the positioning groove of the utility model.

[0021] Figure 7 It is a structural schematic diagram of a positioning block of the utility model.

[0022] Figure 8 This utility model Figure 4 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0023] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0024] 1. Conductive core; 2. Filling layer; 3. Insulation layer; 4. Heat insulation layer; 5. Flame retardant layer; 6. Connecting ring; 7. Wear-resistant layer; 8. Light-colored outer sheath; 9. Flame retardant cavity; 10. Air nozzle; 11. One-way inflatable part; 12. Fixing block; 1201. Exhaust hole; 13. Sealing plate; 1301. First air hole; 14. Operating part; 1401. Second air hole; 1402. Positioning groove; 15. Positioning block; 16. Compression spring. DETAILED DESCRIPTION

[0025] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0026] Embodiment 1:

[0027] As attached Figure 1-Figure 3 As shown:

[0028] The utility model provides an impact-resistant photovoltaic cable, comprising a conductive core 1, a filling layer 2, an insulating layer 3, a heat-insulating layer 4, a flame-retardant layer 5, a connecting ring 6, a wear-resistant layer 7 and a heat-insulating mechanism; the filling layer 2 is coated on the outside of the conductive core 1; the insulating layer 3 is coated on the outside of the filling layer 2; the heat-insulating layer 4 is coated on the outside of the insulating layer 3; the flame-retardant layer 5 is coated on the outside of the heat-insulating layer 4; a plurality of connecting rings 6 are provided, and the plurality of connecting rings 6 are fixedly connected to the outside of the flame-retardant layer 5; the wear-resistant layer 7 is coated on the outside of the plurality of connecting rings 6; and the heat-insulating mechanism is arranged on the outside of the wear-resistant layer 7.

[0029] The heat insulation mechanism includes: a light-colored outer sheath 8; the light-colored outer sheath 8 is coated on the outside of the wear-resistant layer 7, and the light-colored outer sheath 8 is milky white.

[0030] Specific usage and function of this embodiment: through the provision of the light-colored outer sheath 8, since the light-colored outer sheath 8 is milky white, and since the milky white has a low absorption rate for light, the overall temperature of the cable when exposed to sunlight can be reduced.

[0031] Embodiment 2:

[0032] On the basis of the first embodiment, Figure 4-Figure 8As shown, it also includes a protective mechanism, a flame retardant cavity 9, an air nozzle 10, a one-way inflatable member 11, a fixed block 12, an exhaust hole 1201, a sealing plate 13, a first air hole 1301, an operating member 14, a second air hole 1401, a positioning groove 1402, a positioning block 15 and a compression spring 16; the protective mechanism is arranged on the inner side of the wear-resistant layer 7; there are multiple flame retardant cavities 9, and the multiple flame retardant cavities 9 are all opened between the flame retardant layer 5 and the wear-resistant layer 7, the flame retardant cavity 9 is annular, and carbon dioxide gas is arranged inside the flame retardant cavity 9; there are multiple air nozzles 10, and the multiple air nozzles 10 are fixedly connected to the inner side of the wear-resistant layer 7, and the air nozzles 10 are connected to the flame retardant cavity 9; there are multiple fixed blocks 12, and the multiple fixed blocks 12 are fixedly connected to the inner side of the wear-resistant layer 7; there are multiple exhaust holes 1201, and the multiple exhaust holes 1201 are respectively opened on the inner sides of multiple fixed blocks 12; there are multiple sealing plates 13, A plurality of sealing plates 13 are rotatably connected to the inner sides of a plurality of fixed blocks 12; a plurality of first air holes 1301 are provided, and the plurality of first air holes 1301 are respectively opened on the inner sides of the plurality of sealing plates 13; a plurality of operating members 14 are provided, and the plurality of operating members 14 are respectively fixedly connected to the upper end surfaces of the plurality of sealing plates 13; a plurality of second air holes 1401 are provided, and the plurality of second air holes 1401 are respectively opened on the inner sides of the plurality of operating members 14; a plurality of groups of positioning grooves 1402 are provided, and the plurality of groups of positioning grooves 1402 are respectively opened on the lower end surfaces of the plurality of operating members 14; a plurality of positioning blocks 15 are provided, and the plurality of positioning blocks 15 are respectively slidably connected to the inner sides of the plurality of fixed blocks 12, and the positioning blocks 15 are spherical; a plurality of compression springs 16 are provided, and the plurality of compression springs 16 are respectively fixedly connected to the inner sides of the plurality of fixed blocks 12, and the upper ends of the plurality of compression springs 16 are respectively against the outer sides of the plurality of positioning blocks 15.

[0033] The specific usage and function of this embodiment are as follows: the operating member 14 is rotated to make the operating member 14 drive the sealing plate 13 to rotate. The rotation of the sealing plate 13 will align the exhaust hole 1201 with the first air hole 1301 and the second air hole 1401. At this time, the inflation needle is inserted into the inner side of the air nozzle 10 to inject carbon dioxide into the flame retardant cavity 9. With the injection of carbon dioxide, the pressure in the flame retardant cavity 9 will increase, thereby pushing the one-way inflation member 11 open, so that carbon dioxide enters another flame retardant cavity 9. With the injection of carbon dioxide, the air in the original flame retardant cavity 9 will be discharged through the exhaust hole 1201. At this time, the sealing plate 13 is rotated to align the exhaust hole 1201 with the first air hole 1301 and the second air hole 1401. The plate 13 seals the exhaust hole 1201 and rotates the operating member 14 to a position where the positioning groove 1402 is aligned with the positioning block 15, so that the positioning block 15 is pressed against the inner side of the positioning groove 1402 under the action of the compression spring 16 to limit the operating member 14. By setting the carbon dioxide in the flame retardant cavity 9, when the cable catches fire, the wear-resistant layer 7 will be burned. At this time, the carbon dioxide in the flame retardant cavity 9 will overflow, reducing the oxygen content at the fire source, thereby achieving the effect of extinguishing the fire. The flame retardant cavity 9 is filled with carbon dioxide, which can make the cable have a stronger buffering capacity, and can prevent the cable from being impacted and causing the internal conductive core 1 to break or be damaged.

Claims

1. An impact-resistant photovoltaic cable, comprising a conductive core (1), a filling layer (2), an insulating layer (3), a heat-insulating layer (4), a flame-retardant layer (5), a connecting ring (6), a wear-resistant layer (7), a heat-insulating mechanism and a protective mechanism; the filling layer (2) is coated on the outside of the conductive core (1); the insulating layer (3) is coated on the outside of the filling layer (2); the heat-insulating layer (4) is coated on the outside of the insulating layer (3); characterized in that: The flame retardant layer (5) is coated on the outside of the heat insulation layer (4); a plurality of connecting rings (6) are provided, and the plurality of connecting rings (6) are fixedly connected to the outside of the flame retardant layer (5); the wear-resistant layer (7) is coated on the outside of the plurality of connecting rings (6); the heat insulation mechanism is arranged on the outside of the wear-resistant layer (7); and the protective mechanism is arranged on the inside of the wear-resistant layer (7).

2. The impact-resistant photovoltaic cable according to claim 1, characterized in that: The heat insulation mechanism comprises: a light-colored outer sheath (8); the light-colored outer sheath (8) is coated on the outside of the wear-resistant layer (7).

3. The impact-resistant photovoltaic cable according to claim 1, characterized in that: The protection mechanism comprises: a flame retardant cavity (9); a plurality of the flame retardant cavities (9) are provided, the plurality of flame retardant cavities (9) are all arranged between the flame retardant layer (5) and the wear-resistant layer (7), and the flame retardant cavity (9) is annular.

4. The impact-resistant photovoltaic cable according to claim 3, characterized in that: The protective mechanism further comprises: an air nozzle (10) and a one-way inflatable member (11); a plurality of the air nozzles (10) are provided, and the plurality of air nozzles (10) are all fixedly connected to the inner side of the wear-resistant layer (7), and the air nozzles (10) are in communication with the flame-retardant cavity (9).

5. The impact-resistant photovoltaic cable according to claim 4, characterized in that: The protective mechanism further comprises: a fixed block (12), an exhaust hole (1201), a sealing plate (13), a first air hole (1301), an operating member (14) and a second air hole (1401); the fixed block (12) is provided with a plurality of fixed blocks, and the plurality of fixed blocks (12) are all fixedly connected to the inner side of the wear-resistant layer (7); the exhaust hole (1201) is provided with a plurality of exhaust holes (1201), and the plurality of exhaust holes (1201) are respectively opened on the inner sides of the plurality of fixed blocks (12); the sealing plate (13) is provided with a plurality of The sealing plates (13) are rotatably connected to the inner sides of the plurality of fixed blocks (12); the first air holes (1301) are provided in plurality, and the plurality of first air holes (1301) are respectively opened on the inner sides of the plurality of sealing plates (13); the operating members (14) are provided in plurality, and the plurality of operating members (14) are respectively fixedly connected to the upper end surfaces of the plurality of sealing plates (13); the second air holes (1401) are provided in plurality, and the plurality of second air holes (1401) are respectively opened on the inner sides of the plurality of operating members (14).

6. The impact-resistant photovoltaic cable according to claim 5, characterized in that: The protection mechanism further comprises: a positioning groove (1402), a positioning block (15) and a compression spring (16); the positioning groove (1402) is provided with a plurality of groups, and the plurality of groups of positioning grooves (1402) are respectively opened on the lower end surfaces of the plurality of operating members (14); the positioning block (15) is provided with a plurality of groups, and the plurality of positioning blocks (15) are respectively slidably connected to the inner sides of the plurality of fixed blocks (12), and the positioning blocks (15) are spherical; the compression spring (16) is provided with a plurality of groups, and the plurality of compression springs (16) are respectively fixedly connected to the inner sides of the plurality of fixed blocks (12), and the upper ends of the plurality of compression springs (16) are respectively against the outer sides of the plurality of positioning blocks (15).

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