A waterproof photovoltaic cable

Abstract

The present invention relates to the technical field of photovoltaic cables, and the present invention discloses a waterproof photovoltaic cable, comprising a first insulating sleeve, the photovoltaic cable core passes through a limiting hole, a flame retardant layer is fixed to the outside of the first insulating sleeve and the heat conductive sheet, a waterproof layer is fixed to the outside of the flame retardant layer, a heat conductive rod is fixed to the outside of the heat conductive sheet, the heat conductive rod passes through the flame retardant layer and the waterproof layer and is connected to a second insulating sleeve. In the waterproof photovoltaic cable, the first insulating sleeve plays a role of wrapping and protecting the photovoltaic cable core, the heat conductive sheet and the heat conductive rod can play a role of heat conduction, there is a gap between the waterproof layer and the second insulating sleeve, wind can shuttle between the waterproof layer and the second insulating sleeve, a part of the heat conductive rod is between the waterproof layer and the second insulating sleeve, which is convenient for achieving the effect of heat dissipation, the flame retardant layer can play a flame retardant property, the waterproof layer can play a waterproof effect, the water outlet can drain water, and avoid water accumulation between the waterproof layer and the second insulating sleeve.

Description

Technical Field

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

[0002] The development of solar energy has been booming in recent years, and the country has also given support to photovoltaic construction projects. Photovoltaic power generation has driven the rapid development of related products, such as photovoltaic cables. Usually, the low-voltage direct current generated by photovoltaic power generation needs to be converted into alternating current. The connecting cable between photovoltaic cells and AC / DC inverters is photovoltaic cable. Solar energy technology will become one of the green energy technologies of the future. Solar energy or photovoltaics (PV) is increasingly widely used in China. In addition to the rapid development of photovoltaic power plants supported by the government, private investors are also actively building factories and planning to put into production solar modules for global sales.

[0003] It is now found that the photovoltaic cable in the prior art is typically such as publication number CN117497233A, a photovoltaic cable, which relates to the field of photovoltaic cable technology, including: a metal cable core, a plurality of support blocks are arranged in an annular manner outside the metal cable core, a placement cavity is formed between adjacent support blocks, a conductor is arranged in each placement cavity, and a material is filled between the placement cavity and the conductor; a wrapping layer, a flame retardant layer, an isolation layer, a moisture-proof layer and a metal braided layer are sequentially wound outside the support block, the gap of the metal braided layer is filled with filler, and an outer sheath layer is arranged outside the metal braided layer. The present invention, through a fan-shaped structure and a plurality of buffer cavities, can provide a movable margin for the conductor when it is squeezed, and the buffering protection of the conductor is achieved through the margin, thereby improving the overall buffering effect of the cable, reducing the damage to the internal conductor of the cable caused by external forces, and achieving a protective effect.

[0004] The waterproof effect of existing photovoltaic cables is average, and the cable core is generally wrapped in an insulating sheath, which will affect the heat dissipation of the cable core. If the temperature exceeds the tolerance limit of the cable core, it may cause thermal damage to the cable or even a short circuit. To address the above problems, existing equipment needs to be improved. Summary of the invention

[0005] The purpose of the present invention is to provide a waterproof photovoltaic cable to solve the problem that the existing photovoltaic cables mentioned in the above background technology have general waterproof effects and the cable core is generally wrapped by an insulating sheath, which will affect the heat dissipation of the cable core. If the temperature exceeds the tolerance limit of the cable core, it may cause thermal damage to the cable or even short circuit.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waterproof photovoltaic cable, comprising a first insulating sleeve, a heat-conducting plate embedded in the first insulating sleeve, a limiting hole being provided on the heat-conducting plate, the first insulating sleeve being wrapped around the outside of the photovoltaic cable core, the photovoltaic cable core passing through the limiting hole, a flame-retardant layer being fixed to the outside of the first insulating sleeve and the heat-conducting plate, a waterproof layer being fixed to the outside of the flame-retardant layer, a heat-conducting rod being fixed to the outside of the heat-conducting plate, the heat-conducting rod passing through the flame-retardant layer and the waterproof layer and being connected to the second insulating sleeve.

[0007] Preferably, the heat conducting plates are distributed on the first insulating sleeve at equal intervals.

[0008] By adopting the above technical solution, the heat conducting sheet can play a role of heat conduction.

[0009] Preferably, the heat-conducting rod is porous, and is evenly distributed circumferentially between the waterproof layer and the second insulating sleeve.

[0010] By adopting the above technical solution, the heat-conducting rods evenly distributed in the circumferential direction can make the heat-conducting effect more comprehensive and uniform.

[0011] Preferably, a wear-resistant layer is fixed on the outer side of the second insulating sleeve, and the wear-resistant layer is a porous structure.

[0012] By adopting the above technical solution, the wear-resistant layer can exert its wear-resistant characteristics.

[0013] Preferably, ventilation holes are symmetrically provided on both sides of the second insulating sleeve, and a water outlet is provided at the bottom of the second insulating sleeve.

[0014] By adopting the above technical solution, the vent can be used for ventilation and the water outlet can be used for drainage.

[0015] Preferably, an arc-shaped baffle is fixed to the inner bottom of the second insulating sleeve, and the arc-shaped baffle is arranged perpendicular to the water outlet.

[0016] By adopting the above technical solution, the arc-shaped baffle has a certain blocking effect on the wind, preventing the wind from being discharged directly through the water outlet.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The waterproof photovoltaic cable can achieve the purpose of heat conduction and heat dissipation through the coordinated use of the first insulating sleeve, the heat conductive sheet, the photovoltaic cable core, the waterproof layer, the heat conductive rod and the second insulating sleeve. The first insulating sleeve plays a role of wrapping and protecting the photovoltaic cable core, the heat conductive sheet and the heat conductive rod can play a role of heat conduction, there is a gap between the waterproof layer and the second insulating sleeve, and the wind can shuttle between the waterproof layer and the second insulating sleeve. A part of the heat conductive rod is between the waterproof layer and the second insulating sleeve, which is convenient for achieving the heat dissipation effect;

[0019] 2. The waterproof photovoltaic cable can achieve the purpose of flame retardancy and drainage and waterproofing through the coordinated use of the flame retardant layer, the waterproof layer, the second insulating sleeve and the water outlet. The flame retardant layer can exert its flame retardant properties, the waterproof layer can exert its waterproof effect, and the water outlet can drain water to avoid water accumulation between the waterproof layer and the second insulating sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention;

[0021] Figure 2 It is a side cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the connection structure of the heat conducting sheet, the limiting hole and the heat conducting rod of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the present invention.

[0024] In the figure: 1. first insulating sleeve; 2. heat conductive sheet; 3. limiting hole; 4. photovoltaic cable core; 5. flame retardant layer; 6. waterproof layer; 7. heat conductive rod; 8. second insulating sleeve; 9. wear-resistant layer; 10. vent; 11. water outlet; 12. arc baffle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 4 The present invention provides a technical solution: a waterproof photovoltaic cable, comprising a first insulating sleeve 1, a heat conductive sheet 2 is embedded in the first insulating sleeve 1, a limiting hole 3 is provided on the heat conductive sheet 2, the first insulating sleeve 1 is wrapped around the outside of a photovoltaic cable core 4, the photovoltaic cable core 4 passes through the limiting hole 3, a flame retardant layer 5 is fixed to the outside of the first insulating sleeve 1 and the heat conductive sheet 2, a waterproof layer 6 is fixed to the outside of the flame retardant layer 5, a heat conductive rod 7 is fixed to the outside of the heat conductive sheet 2, the heat conductive rod 7 passes through the flame retardant layer 5 and the waterproof layer 6 and is connected to the second insulating sleeve 8.

[0027] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the heat conducting sheets 2 are evenly spaced on the first insulating sleeve 1 , and the heat conducting sheets 2 can play a role in heat conduction, thereby conveniently conducting the heat on the photovoltaic cable core 4 to the heat conducting rod 7 .

[0028] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the heat-conducting rod 7 is porous, and the heat-conducting rod 7 is evenly distributed between the waterproof layer 6 and the second insulating sleeve 8. The waterproof layer 6 can play a waterproof role. The heat-conducting rod 7 and the heat-conducting sheet 2 are used together to conduct the heat on the photovoltaic cable core 4 to the second insulating sleeve 8. There is a gap between the second insulating sleeve 8 and the waterproof layer 6. The wind can shuttle between the second insulating sleeve 8 and the waterproof layer 6. The heat-conducting rod 7 can conduct the heat to the wind and take it away, so as to achieve the effect of heat dissipation. The porous heat-conducting rod 7 evenly distributed circumferentially can make the heat conduction effect more sufficient and uniform.

[0029] In this embodiment, Figure 1 and Figure 2 As shown, a wear-resistant layer 9 is fixed to the outer side of the second insulating sleeve 8, and the wear-resistant layer 9 is a porous structure. The wear-resistant layer 9 can exert its wear-resistant properties, making the device more durable.

[0030] In this embodiment, Figure 2 As shown, ventilation holes 10 are symmetrically provided on both sides of the second insulating sleeve 8, and a water outlet 11 is provided at the bottom of the second insulating sleeve 8. Wind can pass through the porous wear-resistant layer 9 and the ventilation holes 10 to enter between the second insulating sleeve 8 and the waterproof layer 6. The wind shuttles between the second insulating sleeve 8 and the waterproof layer 6, thereby facilitating the heat dissipation effect.

[0031] In this embodiment, Figure 2 and Figure 4 As shown, an arc-shaped baffle 12 is fixed to the inner bottom of the second insulating sleeve 8, and the arc-shaped baffle 12 is vertically arranged to the water outlet 11. The water outlet 11 can play a role in drainage, and the arc-shaped baffle 12 has a role in blocking wind, so that the wind can enter between the second insulating sleeve 8 and the waterproof layer 6 from one of the vents 10 and be discharged from the other vent 10, thereby preventing the wind from being discharged directly through the water outlet 11.

[0032] The use method and advantages of the present invention: The working process of the waterproof photovoltaic cable is as follows:

[0033] like Figures 1 to 4 As shown: the model of the photovoltaic cable core 4 is GFV-S, the heat conductive sheet 2 and the heat conductive rod 7 can play a role in heat conduction, the limit hole 3 plays a role in limiting the photovoltaic cable core 4, the flame retardant layer 5 and the waterproof layer 6 have flame retardant and waterproof properties respectively, the wind can pass through the vent 10 into the second insulating sleeve 8 and the waterproof layer 6, the wind shuttles on the porous heat conductive rod 7, which is convenient for achieving the heat dissipation effect, the wear-resistant layer 9 can play a wear-resistant property, and the water outlet 11 can play a role in drainage.

[0034] In summary, the waterproof photovoltaic cable achieves the purposes of thermal conductivity, heat dissipation, flame retardancy, drainage and waterproofing, and meets people's usage needs.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

[0036] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof photovoltaic cable, comprising a first insulating sleeve (1), characterized in that: A heat conducting sheet (2) is embedded in the first insulating sleeve (1), and a limiting hole (3) is provided on the heat conducting sheet (2). The first insulating sleeve (1) is wrapped around the outside of the photovoltaic cable core (4), and the photovoltaic cable core (4) passes through the limiting hole (3). A flame retardant layer (5) is fixed to the outside of the first insulating sleeve (1) and the heat conducting sheet (2), and a waterproof layer (6) is fixed to the outside of the flame retardant layer (5). A heat conducting rod (7) is fixed to the outside of the heat conducting sheet (2), and the heat conducting rod (7) passes through the flame retardant layer (5) and the waterproof layer (6) and is connected to the second insulating sleeve (8). The heat conducting sheets (2) are evenly spaced on the first insulating sleeve (1), and the heat conducting rod (7) is porous, and the heat conducting rod (7) is evenly distributed circumferentially between the waterproof layer (6) and the second insulating sleeve (8). An arc-shaped baffle (12) is fixed to the inner bottom of the second insulating sleeve (8), and the arc-shaped baffle (12) is arranged perpendicular to the water outlet (11).

2. A waterproof photovoltaic cable according to claim 1, characterized in that: A wear-resistant layer (9) is fixed on the outer side of the second insulating sleeve (8), and the wear-resistant layer (9) is a porous structure.

3. A waterproof photovoltaic cable according to claim 1, characterized in that: Ventilation openings (10) are symmetrically provided on both sides of the second insulating sleeve (8), and a water outlet (11) is provided at the bottom of the second insulating sleeve (8).

Images