Solar photovoltaic cable

Abstract

The utility model provides a solar photovoltaic cable, which relates to the technical field of cables and comprises a conductor, and an insulating layer is fixedly sleeved on the outer surface wall of the conductor. According to the utility model, the insulating layer in the cable can prevent current from leaking to the external environment, the cable and surrounding equipment workers are protected, the damping layer can absorb and disperse vibration and impact generated by the cable during work, the damage of vibration to the cable is reduced, and the thermal insulation layer can prevent the cable from being frozen due to low internal temperature of the cable. The flame-retardant layer can effectively slow down or prevent flame from spreading on the cable so as to control the fire range, the shielding layer can block external electromagnetic pulses and prevent the electromagnetic pulses from influencing stable transmission of internal electric energy, and the reflective layer can reflect sunlight irradiated on the surface of the cable so as to effectively reduce the temperature of the cable and prolong the service life of the cable.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a solar photovoltaic cable. Background Art

[0002] A cable is a device for transmitting electrical energy or signals. It is usually composed of several or several groups of wires. These wires are insulated from each other and are often twisted around a center wire. The entire outside is covered with a highly insulating covering. The cable has the characteristics of internal power conduction and external insulation. It can be divided into many types according to different uses, structures and materials, such as power cables, communication cables, control cables, cables for electrical equipment, marine cables, mining cables, etc.

[0003] Existing solar photovoltaic cables are directly exposed to sunlight when in use, causing the cables to be frequently affected by severe weather such as high temperature, ultraviolet radiation, external pressure, and strong impact, which accelerates the aging and breakage of the cables, thereby increasing the risk of electrical failure of the cables, reducing the quality of signal transmission, or interfering with the normal operation of other electrical equipment. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that when the above-mentioned equipment is in use, the protection effect of the solar photovoltaic cable is poor, resulting in reduced cable service life and signal transmission quality, thereby proposing a solar photovoltaic cable.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a solar photovoltaic cable comprises a conductor, the outer wall fixing sleeve of the conductor is provided with an insulating layer, the outer wall fixing sleeve of the insulating layer is provided with a shock-absorbing layer, the outer wall fixing sleeve of the shock-absorbing layer is provided with a thermal insulation layer, the outer wall fixing sleeve of the thermal insulation layer is provided with a flame-retardant layer, the outer wall fixing sleeve of the flame-retardant layer is provided with a shielding layer, the outer wall fixing sleeve of the shielding layer is provided with a reflective layer, the outer wall of the reflective layer is provided with a group of scale lines, the outer wall of the shielding layer is provided with a group of bases, and a group of mounting holes are opened on the top of the bases.

[0006] Preferably, the insulating layer is a polyolefin layer, and the thickness of the insulating layer is 0.5-5 mm.

[0007] Preferably, the shock absorbing layer is a thermoplastic elastomer layer, and the thickness of the shock absorbing layer is 0.5-10 mm.

[0008] Preferably, the thermal insulation layer is a polyurethane layer, and the thickness of the thermal insulation layer is 1-20 mm.

[0009] Preferably, the flame retardant layer is an intumescent flame retardant layer, and the thickness of the flame retardant layer is 2-30 mm.

[0010] Preferably, the shielding layer is an aluminum foil layer, and the thickness of the shielding layer is 10-200 μm.

[0011] Preferably, the reflective layer is a PET layer, and the thickness of the reflective layer is 5-50 μm.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, the insulating layer inside the cable can prevent the current from leaking into the external environment, protecting the cable and surrounding equipment workers; the shock-absorbing layer can absorb and disperse the vibration and impact generated by the cable during work, reducing the damage of vibration to the cable; the thermal insulation layer can prevent the low temperature inside the cable from freezing the cable; the flame-retardant layer can effectively slow down or prevent the spread of flames on the cable, thereby controlling the scope of the fire; the shielding layer can block external electromagnetic pulses, preventing electromagnetic pulses from affecting the stable transmission of internal electrical energy; the reflective layer can reflect the sunlight shining on the surface of the cable, thereby effectively reducing the temperature of the cable and extending the service life of the cable.

[0014] 2. In the utility model, when it is necessary to bundle the cables, the bundling belt can be passed through the two mounting holes above the base first, and the cables can be fixed on the surface of the mounting seat, which can effectively prevent the bundling belt from slipping on the surface of the cables and improve the fixing effect of the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A main structural stereogram of a solar photovoltaic cable is provided for the utility model;

[0016] Figure 2 A partially disassembled stereoscopic diagram of a solar photovoltaic cable is provided for the utility model;

[0017] Figure 3 A schematic diagram of the splitting of solar photovoltaic cables is proposed for the utility model;

[0018] Figure 4 A plan view of a solar photovoltaic cable is provided for the utility model.

[0019] Legend:

[0020] 1. Conductor; 2. Insulation layer; 3. Shock-absorbing layer; 4. Thermal insulation layer; 5. Flame-retardant layer; 6. Shielding layer; 7. Reflective layer; 8. Scale line; 9. Base; 10. Mounting hole. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a solar photovoltaic cable, including a conductor 1, an outer wall fixing sleeve of the conductor 1 is provided with an insulating layer 2, an outer wall fixing sleeve of the insulating layer 2 is provided with a shock-absorbing layer 3, an outer wall fixing sleeve of the shock-absorbing layer 3 is provided with a thermal insulation layer 4, an outer wall fixing sleeve of the thermal insulation layer 4 is provided with a flame-retardant layer 5, an outer wall fixing sleeve of the flame-retardant layer 5 is provided with a shielding layer 6, an outer wall fixing sleeve of the shielding layer 6 is provided with a reflective layer 7, an outer wall of the reflective layer 7 is provided with a group of scale lines 8, an outer wall of the shielding layer 6 is provided with a group of bases 9, a group of mounting holes 10 are opened on the top of a group of bases 9, the insulating layer 2 adopts a polyolefin layer, and the thickness of the insulating layer 2 is 0.5-5mm, the shock-absorbing layer 3 adopts a thermoplastic elastomer layer, and the thickness of the shock-absorbing layer 3 is 0.5-10mm, the thermal insulation layer 4 adopts a polyurethane layer, and the thickness of the thermal insulation layer 4 is 1-20mm, the flame-retardant layer 5 adopts an intumescent flame retardant layer, and the thickness of the flame-retardant layer 5 is 2-30mm.

[0024] The effect achieved by the entire embodiment 1 is that workers can pass the binding tape through the installation hole 10 to fix the position of the cable to prevent the cable from moving during the fixing process due to the relatively smooth surface, thereby affecting the stability of the entire solar photovoltaic power generation system. The insulating layer 2 can ensure that the current only flows inside the conductor 1, thereby protecting the safety of external workers and equipment. The shock-absorbing layer 3 can absorb the vibration and impact of the outside world and the cable operation, so that the photovoltaic panel system can operate safely and reliably. The thermal insulation layer 4 can prevent external heat from entering the cable, causing the internal temperature of the cable to continue to rise, and can also prevent the internal temperature of the cable from continuing to drop, reducing the temperature fluctuation of the cable, thereby extending the service life of the cable and reducing the replacement cost of the cable. When the cable catches fire, the flame retardant layer 5 will produce a large amount of gas to react with harmful gases and form a barrier layer, which effectively isolates the contact between the fire source, air and combustibles, buys time for rescue and fire fighting, and reduces the damage of the fire to the power system. The scale line 8 can facilitate workers to quickly understand the cable length, reduce the time and workload of measuring the cable, and thus speed up the construction progress.

[0025] Embodiment 2, as Figure 2-Figure 4 As shown, the shielding layer 6 is made of an aluminum foil layer, and the thickness of the shielding layer 6 is 10-200 μm, and the reflective layer 7 is made of a PET layer, and the thickness of the reflective layer 7 is 5-50 μm.

[0026] The effect achieved by the entire embodiment 2 is that the reflective layer 7 can effectively reflect the sunlight on the surface of the optical cable, thereby reducing the surface temperature of the optical cable and radiation such as ultraviolet rays, reducing the damage to the optical cable caused by thermal stress and radiation, and thus extending the service life of the optical cable. The shielding layer 6 can not only prevent the electromagnetic field inside the optical cable from diffusing and affecting the normal operation of the equipment, but also prevent external electromagnetic pulses from entering the cable and affecting the normal transportation of current inside the cable.

[0027] Working principle: When the solar photovoltaic cable is in use, the worker first passes the strapping tape through the two mounting holes 10 opened on the base 9, and then fixes the cable with the strapping tape. When the cable is in use, the outermost reflective layer 7 is made of PET layer, which can effectively reflect the sunlight on the surface of the optical cable, thereby reducing the surface temperature of the optical cable and radiation such as ultraviolet rays. The shielding layer 6 is made of aluminum foil layer, which can not only prevent the electromagnetic field inside the optical cable from diffusing, but also reduce the external electromagnetic pulses from entering the cable and affecting the normal transportation of the current inside the cable. The flame retardant layer 5 is made of an intumescent flame retardant layer. When the cable catches fire, the flame retardant layer 5 will undergo thermal decomposition, gasification and other reactions under high temperature conditions, producing A large amount of gas causes the volume of the material to expand, slowing down the heat conduction rate, lowering the temperature of the material surface, preventing the spread of flames, and reducing the degree of fire hazards. The thermal insulation layer 4 is a polyurethane layer, which can keep the internal temperature of the cable stable, avoid the cable from being damaged due to excessively high or low temperature, and reduce the service life of the cable. The shock-absorbing layer 3 is a thermoplastic elastomer layer, which can effectively absorb the vibration and impact of the outside world and the cable operation, and ensure the smooth operation of the cable. The insulating layer 2 is a polyolefin layer, which can effectively prevent the current from leaking to the external environment and posing a threat to external workers and equipment. A set of scale lines 8 can facilitate workers to quickly understand the length of the cable, thereby improving construction efficiency.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A solar photovoltaic cable, comprising a conductor (1), characterized in that: The outer wall fixing sleeve of the conductor (1) is provided with an insulating layer (2), the outer wall fixing sleeve of the insulating layer (2) is provided with a shock-absorbing layer (3), the outer wall fixing sleeve of the shock-absorbing layer (3) is provided with a heat-insulating layer (4), the outer wall fixing sleeve of the heat-insulating layer (4) is provided with a flame-retardant layer (5), the outer wall fixing sleeve of the flame-retardant layer (5) is provided with a shielding layer (6), the outer wall fixing sleeve of the shielding layer (6) is provided with a reflective layer (7), the outer wall of the reflective layer (7) is provided with a group of scale lines (8), the outer wall of the shielding layer (6) is provided with a group of bases (9), and the top of the bases (9) is provided with a group of mounting holes (10).

2. The solar photovoltaic cable according to claim 1, characterized in that: The insulating layer (2) is a polyolefin layer, and the thickness of the insulating layer (2) is 0.5-5 mm.

3. The solar photovoltaic cable according to claim 2, characterized in that: The shock absorbing layer (3) is a thermoplastic elastomer layer, and the thickness of the shock absorbing layer (3) is 0.5-10 mm.

4. The solar photovoltaic cable according to claim 3, characterized in that: The thermal insulation layer (4) is a polyurethane layer, and the thickness of the thermal insulation layer (4) is 1-20 mm.

5. The solar photovoltaic cable according to claim 4, characterized in that: The flame retardant layer (5) is an intumescent flame retardant layer, and the thickness of the flame retardant layer (5) is 2-30 mm.

6. The solar photovoltaic cable according to claim 5, characterized in that: The shielding layer (6) is an aluminum foil layer, and the thickness of the shielding layer (6) is 10-200 μm.

7. The solar photovoltaic cable according to claim 6, characterized in that: The reflective layer (7) is a PET layer, and the thickness of the reflective layer (7) is 5-50 μm.

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