Aluminum alloy core photovoltaic cable for distributed photovoltaic system

Abstract

The invention discloses an aluminum alloy core photovoltaic cable for a distributed photovoltaic system, and relates to the technical field of cables, the aluminum alloy core photovoltaic cable comprises an outer protective shell, a core wire is installed in the outer protective shell, and a waterproof layer, an insulating layer and a metal shielding layer are fixedly connected between an air gel filling layer and the outer protective shell; a direction adjusting mechanism is mounted on the upper side of the mounting plate, a clamping seat is fixedly connected to the upper side of the direction adjusting mechanism, and an inclined surface is formed outside a clamping groove; a water distribution plate is fixedly connected outside the water storage tank, and a follow-up cooling mechanism is mounted outside the water distribution plate. The device integrates multiple high-performance materials such as water blocking, insulation, electromagnetic shielding, heat insulation and sound insulation, the comprehensive performance of the cable is remarkably improved, the cable can be conveniently and rapidly bent and installed in a complex terrain, positioning is accurate, the construction process is simplified, in addition, the spray head can rotate along with the clamping base and is always kept above the cable, and the construction efficiency is improved. A flexible water spraying cooling function is provided for the cable, and the safety and stability of the cable are further enhanced.

Description

Technical Field

[0001] The present invention relates to the field of cable technology, and in particular to an aluminum alloy core photovoltaic cable for a distributed photovoltaic system. Background Art

[0002] Distributed photovoltaic systems are increasingly used as an efficient and environmentally friendly way of utilizing energy. In the construction of distributed photovoltaic systems, photovoltaic cables are an important transmission medium that connects photovoltaic modules with key components such as inverters and power grids. Their performance is directly related to the safety, stability and efficiency of the entire system. When dealing with complex and changeable outdoor environments, traditional photovoltaic cables often have problems such as moisture penetration, reduced electrical insulation performance, electromagnetic interference, and insufficient thermal stability in high temperature environments, which limits their application potential in specific environments.

[0003] In response to the above problems, although there are many improved photovoltaic cables on the market, their comprehensive performance in terms of water resistance, insulation performance, electromagnetic shielding, heat insulation and sound insulation still needs to be improved. In particular, when laying distributed photovoltaic systems in complex terrains such as mountains, the bending installation, positioning and fixation of cables, and safety protection in high temperature environments have become technical problems that need to be solved urgently. Therefore, in response to the above technical problems, an aluminum alloy core photovoltaic cable for distributed photovoltaic systems is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide an aluminum alloy core photovoltaic cable for a distributed photovoltaic system, which integrates multiple high-performance materials such as water blocking, insulation, electromagnetic shielding, heat insulation and sound insulation, thereby significantly improving the comprehensive performance of the cable. Secondly, the cable can be conveniently bent and installed in complex terrain with precise positioning, thereby simplifying the construction process. In addition, the nozzle can rotate with the holder and always remain above the cable, thereby providing the cable with a flexible water spray cooling function, thereby further enhancing the safety and stability of the cable.

[0005] The present invention is achieved through the following technical solutions:

[0006] An aluminum alloy core photovoltaic cable for a distributed photovoltaic system, comprising:

[0007] An outer protective shell, inside which three groups of core wires arranged in an annular manner are installed, an aerogel filling layer is filled between the outer protective shell and the core wires, a water-blocking layer, an insulating layer and a metal shielding layer are fixedly connected in layers from outside to inside between the aerogel filling layer and the outer protective shell, and a pressure-resistant mechanism is installed between the metal shielding layer and the core wires;

[0008] A mounting plate, the bottom of which is fixedly connected with an insertion rod, two sets of symmetrically arranged direction adjustment mechanisms are installed on the upper side of the mounting plate, a clamping seat is fixedly connected to the upper side of the direction adjustment mechanism, a clamping slot is provided on the outside of the clamping seat, an inclined surface is provided on the outside of the clamping slot, and the outer protective shell is clamped with the inner side of the clamping slot;

[0009] A water storage tank is fixedly connected to the upper side of the mounting plate, a barrier net is provided on the upper side of the water storage tank, a water distribution plate is fixedly connected to the outside of the water storage tank, and the water distribution plate is located on the upper side of the two groups of connecting parts, a micro water pump is fixedly connected to the inside of the water storage tank, a conduit is fixedly connected to the outside of the micro water pump, and the end of the conduit extends into the water distribution plate, and a follow-up cooling mechanism is installed on the outside of the water distribution plate.

[0010] Preferably, the outer protective shell is made of wear-resistant material, and the water-blocking layer is coated with water-blocking powder.

[0011] Preferably, the insulating layer is made of radiation cross-linked polyolefin, the metal shielding layer is made of copper wire braided mesh, and the aerogel filling layer is filled with aerated gel.

[0012] Preferably, the pressure-resistant mechanism includes a connecting sleeve, a mounting sleeve, a connecting rod and a support rod, the connecting sleeve is fixedly connected to the inner side of the metal shielding layer, the mounting sleeve is fixedly connected and sleeved on the outside of the core wire, the connecting rod is fixedly connected between two groups of the mounting sleeves, the support rod is fixedly connected between the connecting rod and the connecting sleeve, and the pressure-resistant mechanism is arranged at equal intervals on the inner side of the metal shielding layer.

[0013] Preferably, the adjustment mechanism includes a connecting member, a rotating member and a rotating plate, the connecting member is fixedly connected to the upper side of the mounting plate, and the number of connecting members is two groups and they are symmetrically arranged, the rotating member is rotatably connected to the outside of the connecting member, the rotating plate is fixedly connected to the end of the rotating member, and the rotating plate is slidably connected to the upper side of the mounting plate.

[0014] Preferably, screw holes are provided on the upper side of the mounting plate, and the screw holes are provided in several groups and arranged in an arc shape, the axis points of the arc-shaped screw holes coincide with the connecting parts, and positioning holes are provided on the outside of the rotating plate, and the positioning holes match the screw holes.

[0015] Preferably, a temperature sensor is fixedly connected to the inner side of the card slot.

[0016] Preferably, a connecting plate is fixedly connected to the inner side of the water storage tank, an opening is formed on the outside of the connecting plate, and a shading cloth is laid in the opening, wherein the shading cloth is made of a water-permeable material.

[0017] Preferably, the follow-up cooling mechanism includes a rotating tube, a nozzle, a vertical plate and a connecting rod. The rotating tube is rotatably connected to the upper side of the water distribution plate, and the number of the water distribution plates is two groups and they are symmetrically arranged. The bottom end of the water distribution plate is located directly above the connecting piece, the nozzle is fixedly connected to the outside of the rotating tube, the vertical plate is fixedly connected to the upper side of the base, and the connecting rod is fixedly connected between the rotating tube and the vertical plate.

[0018] Preferably, a limit plate is fixedly connected to the outside of the rotating tube, and the limit plate abuts against the upper side of the water distribution plate, and an oblique support rod is fixedly connected between the water distribution plate and the water storage tank.

[0019] The technical solution of the present invention has at least the following beneficial effects:

[0020] 1. The present invention proposes an aluminum alloy core photovoltaic cable for a distributed photovoltaic system. The internal structure of the cable is carefully arranged from the inside out, including a water-blocking layer coated with water-blocking powder, an insulating layer made of irradiated cross-linked polyolefin, a metal shielding layer made of copper wire mesh, and an aerogel filler. These designs together improve the cable's water-blocking performance, electrical insulation performance, electromagnetic shielding effect, and thermal and sound insulation performance, enabling it to work stably in various complex environments.

[0021] 2. The aluminum alloy core photovoltaic cable for distributed photovoltaic systems proposed in the present invention realizes convenient bending and installation and precise positioning of the cable through the clever coordination of components such as the mounting plate, rotating parts, and the holder. The device allows for rapid preliminary positioning of the mounting plate in mountainous soil, and adapts to the cable laying requirements at different angles by adjusting the angle of the holder, which greatly simplifies the installation process and improves construction efficiency.

[0022] 3. The present invention proposes an aluminum alloy core photovoltaic cable for a distributed photovoltaic system. When the cable is installed in a holder and adjusted to a desired angle, the nozzle will rotate with the rotation of the holder and always remain directly above the cable, ensuring that when the temperature sensor senses a sharp rise in the surface temperature of the cable, the micro water pump can respond quickly and spray water to cool the cable in time. Especially when the temperature is prone to accumulate at the bend of the cable, the device can respond quickly and effectively cool down, avoiding the risk of combustion due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 for Figure 1 A magnified view of middle;

[0025] Figure 3 for Figure 1 Enlarged view of middle B;

[0026] Figure 4 It is a schematic diagram of local installation and positioning of the present invention;

[0027] Figure 5 for Figure 4 Enlarged view of middle C;

[0028] Figure 6 It is a schematic diagram of the local structure of the present invention;

[0029] Figure 7 for Figure 6 Enlarged view of middle D;

[0030] Figure 8 It is a partial side sectional view of the present invention;

[0031] Fig. 9 for Figure 8 Enlarged view of E in the middle;

[0032] Fig.10 for Figure 6 Enlarged view of middle F;

[0033] Icons: 1. Outer shell; 2. Core wire; 3. Water-blocking layer; 4. Insulating layer; 5. Metal shielding layer; 6. Connecting sleeve; 7. Mounting sleeve; 8. Connecting rod; 9. Support rod; 10. Aerogel filling layer; 11. Mounting plate; 12. Insert rod; 13. Connecting piece; 14. Rotating piece; 15. Rotating plate; 16. Screw hole; 17. Positioning hole; 18. Card seat; 19. Card slot; 20. Inclined surface; 21. Temperature sensor; 22. Water storage tank; 23. Barrier net; 24. Connecting plate; 25. Shading cloth; 26. Water distribution board; 27. Micro water pump; 28. Conduit; 29. ​​Rotating tube; 30. Limiting plate; 31. Nozzle; 32. Vertical plate; 33. Connecting rod; 34. Diagonal support rod. DETAILED DESCRIPTION

[0034] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] See also Figure 1-Figure 3The present invention proposes an aluminum alloy core photovoltaic cable for a distributed photovoltaic system, comprising an outer protective shell 1, a mounting plate 11 and a water storage tank 22, three groups of annularly arranged core wires 2 are installed inside the outer protective shell 1, an aerogel filling layer 10 is filled between the outer protective shell 1 and the core wire 2, a water-blocking layer 3, an insulating layer 4 and a metal shielding layer 5 are fixedly connected in layers between the aerogel filling layer 10 and the outer protective shell 1 from outside to inside, and a pressure-resistant mechanism is installed between the metal shielding layer 5 and the core wire 2.

[0037] The outer shell 1 is made of wear-resistant material, which can make the outer shell 1 have high wear resistance. The water-blocking layer 3 for protecting the internal structure is coated with water-blocking powder, the insulating layer 4 is made of irradiated cross-linked polyolefin, the metal shielding layer 5 is made of copper wire braided mesh, and the aerogel filling layer 10 is filled with aerated gel.

[0038] The pressure-resistant mechanism includes a connecting sleeve 6, an installation sleeve 7, a connecting rod 8 and a support rod 9. The connecting sleeve 6 is fixedly connected to the inner side of the metal shielding layer 5, the installation sleeve 7 is fixedly connected and sleeved on the outside of the core wire 2, the connecting rod 8 is fixedly connected between the two groups of installation sleeves 7, and the support rod 9 is fixedly connected between the connecting rod 8 and the connecting sleeve 6. The pressure-resistant mechanism is arranged at equal intervals on the inner side of the metal shielding layer 5. The provision of the pressure-resistant mechanism facilitates strengthening the stability of the internal structure of the cable.

[0039] The working principle of an aluminum alloy core photovoltaic cable for a distributed photovoltaic system based on Example 1 is that the internal structure of the cable is carefully arranged from the inside out. First, the water-blocking layer 3 formed by coating with water-blocking powder effectively blocks moisture penetration, ensuring that the cable can work stably in a humid environment. Next, the insulating layer 4 made of irradiated cross-linked polyolefin provides reliable protection for the cable in high temperature and harsh environments with its excellent electrical insulation performance and chemical stability, and the metal shielding layer 5 made of copper wire braided mesh can effectively shield external electromagnetic interference, protect internal signals from interference, and improve electromagnetic compatibility. In addition, the aerogel filler filled in the cable has extremely low thermal conductivity and good sound insulation performance, which brings excellent heat insulation and sound insulation effects to the cable, and is particularly suitable for occasions with high requirements for these two properties. In summary, this cable not only improves the safety and reliability of the cable, but also greatly expands its application range, enabling it to work stably in various complex environments and meet users' stringent requirements for high-quality power or signal transmission.

[0040] Embodiment 2

[0041] See also Figure 1-Figure 7 Based on the first embodiment, a plug rod 12 is fixedly connected to the bottom of the mounting plate 11, and two sets of symmetrically arranged direction adjustment mechanisms are installed on the upper side of the mounting plate 11. A socket 18 is fixedly connected to the upper side of the direction adjustment mechanism. A slot 19 is provided on the outside of the socket 18, and a slope 20 is provided on the outside of the slot 19, and the outer protective shell 1 is snap-connected to the inner side of the slot 19.

[0042] The direction adjustment mechanism includes a connecting member 13, a rotating member 14 and a rotating plate 15. The connecting member 13 is fixedly connected to the upper side of the mounting plate 11, and the number of the connecting members 13 is two groups and they are symmetrically arranged. The rotating member 14 is rotatably connected to the outside of the connecting member 13, the rotating plate 15 is fixedly connected to the end of the rotating member 14, and the rotating plate 15 is slidably connected to the upper side of the mounting plate 11.

[0043] The upper side of the mounting plate 11 is provided with screw holes 16 , and the number of the screw holes 16 is several groups and arranged in an arc shape, the axis point of the arc-shaped screw holes 16 coincides with the connecting member 13 , and the outside of the rotating plate 15 is provided with positioning holes 17 , and the positioning holes 17 match the screw holes 16 .

[0044] A temperature sensor 21 is fixedly connected to the inner side of the card slot 19. The temperature sensor 21 can monitor the surface temperature of the cable in real time.

[0045] In this embodiment, when this cable is used in the laying of distributed photovoltaic systems, it is often necessary to perform bending and installation. Since photovoltaic systems are often installed in mountainous areas, the mounting plate 11 and other devices can be taken out at this time, and the insertion rod 12 at the bottom of the mounting plate 11 is inserted into the mountain soil where the cable needs to be bent and installed, so as to complete the preliminary positioning of the mounting plate 11. Then, the rotating member 14 is rotated around the connecting member 13, and at the same time, the corresponding screw hole 16 is aligned with the positioning hole 17, and the fixing bolt is driven between the two to position the rotating plate 15, so as to adjust the angle between the two groups of card seats 18 and achieve precise positioning. Then, the two ends of the manually-held cable are placed on the two groups of inclined surfaces 20 above the card seat 18, and the cable is manually pressed down. Through the plasticity of its outer surface, the cable can be pressed into the card slot 19, so as to complete the bending and positioning work of the cable in the laying of mountain distributed photovoltaic systems, and the bending angle can be adjusted arbitrarily, with a certain adjustable effect, and the installation is relatively convenient.

[0046] Embodiment 3

[0047] See also Figure 1-Figure 10 Based on the first and second embodiments, the water storage tank 22 is fixedly connected to the upper side of the mounting plate 11, a barrier net 23 is provided on the upper side of the water storage tank 22, a water distribution plate 26 is fixedly connected to the outside of the water storage tank 22, and the water distribution plate 26 is located on the upper side of the two sets of connecting parts 13, a micro water pump 27 is fixedly connected to the inside of the water storage tank 22, a conduit 28 is fixedly connected to the outside of the micro water pump 27, and the end of the conduit 28 extends into the water distribution plate 26, and a follow-up cooling mechanism is installed on the outside of the water distribution plate 26.

[0048] A connecting plate 24 is fixedly connected to the inner side of the water storage tank 22. An opening is provided on the outside of the connecting plate 24, and a shade cloth 25 is laid in the opening. The shade cloth 25 is made of a water-permeable material. The provision of the shade cloth 25 can reduce the large amount of loss of water collected in the water storage tank 22 due to sunlight exposure.

[0049] The follow-up cooling mechanism includes a rotating tube 29, a nozzle 31, a vertical plate 32 and a connecting rod 33. The rotating tube 29 is rotatably connected to the upper side of the water distribution plate 26, and the number of the water distribution plates 26 is two groups and they are symmetrically arranged. The bottom end of the water distribution plate 26 is located directly above the connecting piece 13. The nozzle 31 is fixedly connected to the outside of the rotating tube 29, the vertical plate 32 is fixedly connected to the upper side of the holder 18, and the connecting rod 33 is fixedly connected between the rotating tube 29 and the vertical plate 32.

[0050] The outside of the rotating tube 29 is fixedly connected to a limit plate 30, and the limit plate 30 abuts against the upper side of the water distribution plate 26. An inclined support rod 34 is fixedly connected between the water distribution plate 26 and the water storage tank 22. The inclined support rod is provided to enhance the installation stability of the water distribution plate.

[0051] In this embodiment, after the cable is installed in the holder 18 and used for a period of time, when it rains, rainwater will pass through the barrier net 23 into the water storage tank 22 for collection, and the shading cloth 25 can ensure that rainwater can penetrate into the water storage tank 22, and can also block sunlight to reduce losses. In the process of bending and positioning the cable by rotating the holder 18, the vertical plate 32 will rotate with the holder 18, and since the connecting rod 33 is fixedly connected between the holder 18 and the rotating tube 29, the rotating tube 29 can rotate with it, and since the bottom of the rotating tube 29 is coaxial with the connecting piece 13, the nozzle 31 is always located at the extension line of the two ends of the cable bend. Above, in addition, since the temperature accumulation at the cable bend is faster than that at the long straight section, the cable bend is more likely to overheat and cause combustion. Therefore, when the temperature sensor senses a sharp rise in the surface temperature of the cable, the micro water pump 27 can be automatically operated in time or through program settings to transport the water inside the water tank 22 to the water distribution plate 26 through the conduit 28, and then the water is transported to the nozzle 31 through the rotating tube 29 through the pressure effect. Since the nozzle 31 will rotate with the holder 18 and is always directly above the two ends of the cable, the cable can be sprayed with water to cool it down in time, avoiding the risk of high temperature ignition of the cable and improving the safety of the cable.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aluminum alloy core photovoltaic cable for a distributed photovoltaic system, characterized in that: include: An outer protective shell (1) having three groups of core wires (2) arranged in an annular manner installed therein, an aerogel filling layer (10) being filled between the outer protective shell (1) and the core wires (2), a water-blocking layer (3), an insulating layer (4) and a metal shielding layer (5) being fixedly connected in layers from outside to inside between the aerogel filling layer (10) and the outer protective shell (1), and a pressure-resistant mechanism being installed between the metal shielding layer (5) and the core wires (2); A mounting plate (11), the bottom of which is fixedly connected to an insertion rod (12), two groups of symmetrically arranged direction adjustment mechanisms are installed on the upper side of the mounting plate (11), a clamping seat (18) is fixedly connected to the upper side of the direction adjustment mechanism, a clamping slot (19) is provided on the outside of the clamping seat (18), an inclined surface (20) is provided on the outside of the clamping slot (19), and the outer protective shell (1) is clamped to the inner side of the clamping slot (19); A water storage tank (22) is fixedly connected to the upper side of the mounting plate (11), a barrier net (23) is provided on the upper side of the water storage tank (22), a water distribution plate (26) is fixedly connected to the outside of the water storage tank (22), and the water distribution plate (26) is located on the upper side of the two groups of connecting parts (13), a micro water pump (27) is fixedly connected to the inside of the water storage tank (22), a conduit (28) is fixedly connected to the outside of the micro water pump (27), and the end of the conduit (28) extends into the water distribution plate (26), and a follow-up cooling mechanism is installed on the outside of the water distribution plate (26).

2. The aluminum alloy core photovoltaic cable for a distributed photovoltaic system according to claim 1, characterized in that: The outer protective shell (1) is made of wear-resistant material, and the water-blocking layer (3) is formed by coating with water-blocking powder.

3. The aluminum alloy core photovoltaic cable for a distributed photovoltaic system according to claim 1, characterized in that: The insulating layer (4) is made of radiation cross-linked polyolefin, the metal shielding layer (5) is made of copper wire braided mesh, and the aerogel filling layer (10) is filled with aerated gel.

4. The aluminum alloy core photovoltaic cable for a distributed photovoltaic system according to claim 1, characterized in that: The pressure-resistant mechanism comprises a connecting sleeve (6), a mounting sleeve (7), a connecting rod (8) and a supporting rod (9); the connecting sleeve (6) is fixedly connected to the inner side of the metal shielding layer (5); the mounting sleeve (7) is fixedly connected to and sleeved on the outside of the core wire (2); the connecting rod (8) is fixedly connected between two groups of the mounting sleeves (7); the supporting rod (9) is fixedly connected between the connecting rod (8) and the connecting sleeve (6); and the pressure-resistant mechanism is arranged at equal intervals on the inner side of the metal shielding layer (5).

5. The aluminum alloy core photovoltaic cable for a distributed photovoltaic system according to claim 1, characterized in that: The direction adjustment mechanism comprises a connecting member (13), a rotating member (14) and a rotating plate (15); the connecting member (13) is fixedly connected to the upper side of the mounting plate (11); the connecting members (13) are in two groups and are symmetrically arranged; the rotating member (14) is rotatably connected to the outside of the connecting member (13); the rotating plate (15) is fixedly connected to the end of the rotating member (14); and the rotating plate (15) is slidably connected to the upper side of the mounting plate (11).

6. The aluminum alloy core photovoltaic cable for a distributed photovoltaic system according to claim 5, characterized in that: The upper side of the mounting plate (11) is provided with screw holes (16), and the screw holes (16) are arranged in a plurality of groups in an arc shape, and the axis points of the screw holes (16) arranged in an arc shape coincide with the connecting member (13). The outside of the rotating plate (15) is provided with positioning holes (17), and the positioning holes (17) match the screw holes (16).

7. The aluminum alloy core photovoltaic cable for a distributed photovoltaic system according to claim 1, characterized in that: A temperature sensor (21) is fixedly connected to the inner side of the card slot (19).

8. The aluminum alloy core photovoltaic cable for a distributed photovoltaic system according to claim 1, characterized in that: A connecting plate (24) is fixedly connected to the inner side of the water storage tank (22), an opening is formed on the outside of the connecting plate (24), and a shading cloth (25) is laid in the opening, wherein the shading cloth (25) is made of a water-permeable material.

9. The aluminum alloy core photovoltaic cable for a distributed photovoltaic system according to claim 5, characterized in that: The follow-up cooling mechanism comprises a rotating tube (29), a nozzle (31), a vertical plate (32) and a connecting rod (33); the rotating tube (29) is rotatably connected to the upper side of a water distribution plate (26); the number of the water distribution plates (26) is two groups and they are symmetrically arranged; the bottom end of the water distribution plate (26) is located directly above the connecting piece (13); the nozzle (31) is fixedly connected to the outside of the rotating tube (29); the vertical plate (32) is fixedly connected to the upper side of the holder (18); and the connecting rod (33) is fixedly connected between the rotating tube (29) and the vertical plate (32).

10. The aluminum alloy core photovoltaic cable for a distributed photovoltaic system according to claim 9, characterized in that: The outside of the rotating tube (29) is fixedly connected to a limit plate (30), and the limit plate (30) abuts against the upper side of the water distribution plate (26). An oblique support rod (34) is fixedly connected between the water distribution plate (26) and the water storage tank (22).

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