High-voltage polyethylene cable for solar power generation

Abstract

The invention relates to the technical field of cables, and provides a high-voltage polyethylene cable for solar power generation, which comprises a conductor, an insulating layer, an inner sheath, an armor layer and an outer sheath, the insulating layer is wrapped outside the conductor, a filler is arranged between the inner sheath and the insulating layer, the armor layer and the outer sheath are sequentially wrapped outside the inner sheath, and the outer sheath is arranged between the armor layer and the outer sheath. The cleaning device further comprises reinforcing assemblies, connecting assemblies and cleaning assemblies, the reinforcing assemblies are arranged outside the outer sheath, each reinforcing assembly comprises two protective frames and a reinforcing rod, the protective frames are located outside the outer sheath, the reinforcing rods are fixedly connected between the two protective frames, the connecting assemblies are used for connecting the two adjacent reinforcing assemblies, and the cleaning assemblies are arranged on the connecting assemblies. The cleaning assembly is used for cleaning the exterior of the outer sheath. According to the technical scheme, the problems that in the prior art, a cable is exposed in an outdoor environment, is blown by wind power and rotates along with a photovoltaic panel and is prone to torsion damage, and meanwhile, the cable is overheated to be damaged due to dust accumulation are solved.

Description

Technical Field

[0001] The invention relates to a cross-linked polyethylene insulated power cable, belonging to the technical field of cables, and specifically to a high-voltage polyethylene cable for solar power generation. Background Art

[0002] Solar power generation refers to a power generation method that directly converts light energy into electrical energy without going through a thermal process. The most common solar power generation method is photovoltaic power generation, which is a direct power generation method that effectively absorbs solar radiation energy through solar-grade semiconductor electronic devices and converts it into electrical energy.

[0003] Solar power generation usually takes place outdoors in harsh environments. Both solar photovoltaic panels and cables are exposed to the outdoor environment. To improve power generation efficiency, many solar photovoltaic panels are designed to be installed outdoors in open areas and move with the sunlight. Many of them are located in windy and sandy environments. Ordinary cables are easily damaged by the wind and the rotation of the photovoltaic panels in windy and sandy environments. At the same time, dust accumulation on the cable surface can easily cause local overheating, leading to cable damage. Summary of the Invention

[0004] The present invention proposes a high-voltage polyethylene cable for solar power generation, which is used to solve the problems in the prior art that the cable is exposed to the outdoor environment, is easily damaged by wind and rotates with the photovoltaic panel, and that dust accumulation causes the cable to overheat and cause damage.

[0005] The technical solutions of the present invention are as follows: A high-voltage polyethylene cable for solar power generation comprises a conductor, an insulating layer, an inner sheath, an armor layer and an outer sheath, wherein the insulating layer is wrapped around the outside of the conductor, a filler is provided between the inner sheath and the insulating layer, the armor layer and the outer sheath are wrapped around the outside of the inner sheath in sequence, and further comprises a reinforcing assembly, a connecting assembly and a cleaning assembly.

[0006] There are multiple reinforcement components, each of which is arranged outside the outer sheath. The reinforcement components include a protective frame and a reinforcement rod. Two protective frames are provided. The protective frames are located outside the outer sheath, and the reinforcement rod is fixedly connected between the two protective frames. The connecting assembly is used to connect two adjacent reinforcement assemblies, and the connecting assembly includes a connecting ring and a blocking piece. The connecting ring is provided in plurality, and the connecting ring is fixedly connected to an end of the protective frame away from the reinforcement rod. The blocking piece passes through the plurality of connecting rings, and the two ends of the blocking piece are detachably connected. The cleaning assembly is installed on the reinforcing assembly and is used to clean the outside of the outer sheath. The cleaning assembly includes a cleaning rod and a driving member. There are multiple cleaning rods. The cleaning rod is fixedly connected to the reinforcing rod. The cleaning rod is in contact with the outer side of the outer sheath. The driving member is provided on the reinforcing assembly and is used to drive the protective frame to rotate. The driving member includes a driving rod and a driving block. The driving rod is rotatably provided on the protective frame. The driving block is fixedly connected to the outside of the driving rod through an elastic plate, and the driving block is in contact with the outer sheath.

[0007] In order to assist the rotation of the protection frame, the inner wall of the protection frame is rotatably connected to a roller, and the roller is in contact with the outer wall of the outer sheath.

[0008] In order to realize convenient disassembly and assembly of the reinforcement component, the protective frame is a splicing structure, and the protective frame includes two splicing frames. One end of the splicing frame is fixedly connected to a plug rod, and the other end of the splicing frame is provided with a socket matching the plug rod. The outer fixed sleeve of the plug rod is provided with a damping pad, and the damping pad contacts the inner wall of the socket.

[0009] The working principle and beneficial effects of the present invention are: 1. In the present invention, two adjacent reinforcement components are connected by passing a plurality of connecting rings through a baffle, that is, the protective frame and the reinforcing rod are installed on the outside of the outer sheath. The protective frame and the reinforcing rod are used to improve the strength of the cable, reduce the damage to the cable caused by wind and torsional damage when the photovoltaic panel rotates, and at the same time, the reinforcing rod and the connecting ring are made of elastic material and can adapt to the bending of the cable.

[0010] 2. In the present invention, the driving block is driven to rotate by the driving rod. The driving block contacts the outer sheath during the rotation process. Under the reaction force, the driving rod and the protective frame are driven to rotate around the outside of the outer sheath, thereby driving the reinforcing rod and the cleaning rod to rotate, so that the cleaning rod cleans the outside of the outer sheath, reducing the accumulation of sand and dust on the outside of the outer sheath. At the same time, the rotation of the driving block will knock on the outer sheath, further reducing the accumulation of sand and dust on the outer sheath, thereby reducing the local heating of the cable due to the insulation of sand and dust accumulation.

[0011] 3. In the present invention, the protective frame is detachable by the detachable blocking piece and the cooperation between the insertion rod and the insertion hole. When the protective frame is damaged, the specific protective frame can be conveniently disassembled and replaced, reducing the replacement cost.

[0012] 4. Therefore, compared with the existing technology, the present invention further protects the outside of the cable through the protective frame and the reinforcement rod, increases the strength of the cable, and reduces damage to the cable in the outdoor environment. At the same time, the driving rod drives the driving block to rotate and contact the outer sheath, and pushes the protective frame and the reinforcement rod to rotate around the outer sheath under the reaction force, driving the cleaning rod to clean the outside of the cable, reducing the local heating phenomenon caused by the accumulation of sand and dust on the surface of the cable. At the same time, through the splicing of the baffle and the protective frame, the specific protective frame can be conveniently disassembled and assembled, which is convenient for replacing the damaged reinforcement component. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 It is a structural schematic diagram of the present invention from a first viewing angle; Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention; Figure 3 It is a schematic diagram of the planar structure of the present invention from a side view; Figure 4 This is a schematic structural diagram of the roller, two sets of reinforcement components, a connecting component and a cleaning component of the present invention; Figure 5 It is a structural schematic diagram of the roller, a single set of reinforcement components and a cleaning component of the present invention; Figure 6 It is a structural schematic diagram of the roller and protective frame of the present invention.

[0015] In the picture: 1. Conductor; 2. Insulation layer; 3. Inner sheath; 4. Armor layer; 5. Outer sheath; 6. Roller; 101. Reinforcement rod; 201, connecting ring; 202, blocking piece; 301, cleaning rod; 401, driving rod; 402, driving block; 403, motor; 404, elastic plate; 501, splicing frame; 502, insertion rod; 503, damping pad. DETAILED DESCRIPTION

[0016] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making any creative efforts are within the scope of protection of the present invention.

[0017] like Figures 1 to 6As shown, this embodiment proposes a high-voltage polyethylene cable for solar power generation, including a conductor 1, an insulating layer 2, an inner sheath 3, an armor layer 4 and an outer sheath 5. The insulating layer 2 is wrapped around the outside of the conductor 1, and a filler is provided between the inner sheath 3 and the insulating layer 2. The armor layer 4 and the outer sheath 5 are wrapped around the outside of the inner sheath 3 in sequence. The insulating layer 2, the inner sheath 3 and the outer sheath 5 can be made of polyethylene. The cable is a high-voltage cross-linked polyethylene cable with excellent mechanical properties, and has obvious advantages in tensile strength and elongation at break. It also includes a reinforcing component, a connecting component and a cleaning component.

[0018] like Figures 1 to 6 As shown, there are multiple reinforcement components, which are arranged on the outside of the outer sheath 5. The reinforcement components include a protective frame and a reinforcement rod 101. There are two protective frames, which are located on the outside of the outer sheath 5. The reinforcement rod 101 is fixedly connected between the two protective frames. The outside of the cable is protected by the protective frame and the reinforcement rod 101, and the overall strength of the cable is improved, reducing the torsional damage to the cable caused by wind and rotation with the photovoltaic panel. At the same time, the reinforcement rod 101 is made of elastic material and can adapt to the bending of the cable. When the cable is bent under the action of external force, the external protective frame and reinforcement rod 101 form a counteraction with the external force, thereby protecting the internal cable structure.

[0019] like Figures 1 to 4 As shown, the connecting component is used to connect two adjacent reinforcement components. The connecting component includes a connecting ring 201 and a baffle 202. There are multiple connecting rings 201. The connecting ring 201 is fixedly connected to the end of the protective frame away from the reinforcement rod 101. The baffle 202 passes through multiple connecting rings 201. The two ends of the baffle 202 are detachably connected. The two ends of the baffle 202 are respectively equipped with a male buckle and a female buckle. The baffle 202 is an elastic and bendable structure. When the two groups of reinforcement components are close to each other, the baffle 202 passes through multiple connecting rings 201 and connects the head and tail of the baffle through the buckling of the male buckle and the female buckle. The baffle 202 is located inside the multiple connecting rings 201 and can connect the two groups of connecting rings 201, thereby connecting the two protective frames. There is a certain distance between the two protective frames. At the same time, the connecting ring 201 is made of elastic material and can be made of iron metal to adapt to the bending of the cable.

[0020] like Figures 1 to 5As shown, the cleaning assembly is installed on the reinforcement assembly and is used to clean the outside of the outer sheath 5. The cleaning assembly includes a cleaning rod 301 and a driving member. There are multiple cleaning rods 301. The cleaning rods 301 are fixedly connected to the reinforcement rod 101. The cleaning rods 301 are in contact with the outside of the outer sheath 5. The driving member is set on the reinforcement assembly and is used to drive the protective frame to rotate. The driving member includes a driving rod 401 and a driving block 402. The driving rod 401 is rotatably set on the protective frame. A motor is installed on the protective frame. 403, the driving rod 401 is fixedly connected to the output end of the motor 403, and the driving block 402 is fixedly connected to the outside of the driving rod 401 through the elastic plate 404. The driving block 402 contacts the outer sheath 5, and the motor 403 can drive the driving rod 401 to rotate, thereby driving the driving block 402 to rotate through the elastic rod. The driving block 402 contacts the outer sheath 5 during the rotation process, and drives the driving rod 401 and the protective frame to rotate around the outside of the outer sheath 5 under the reaction force, thereby driving the reinforcing rod 10 1 and the cleaning rod 301 rotate, so that the cleaning rod 301 cleans the outside of the outer sheath 5, reducing the accumulation of dust on the outside of the outer sheath 5. At the same time, the rotation of the driving block 402 will knock on the outer sheath 5, shaking off the dust on the surface of the cable, further reducing the accumulation of dust on the outer sheath 5, thereby reducing the local heating of the cable caused by the accumulation of dust and heat insulation. Under the elastic action of the elastic rod, the rigid collision between the driving block 402 and the outer sheath 5 is reduced, and at the same time, the outer sheath 5 is prevented from causing a large obstruction to the rotation of the driving block 402. Motors 403 are installed on several protective frames in the multiple reinforcement components. When the motor 403 drives the driving block 402 to rotate and drive a single reinforcement component to rotate, the connecting ring 201 can drive the adjacent protective frames to rotate, realizing the rotation of multiple protective frames, and driving the cleaning rod 301 to clean the outside of the outer sheath 5. It should be noted that the motor 403 is equipped with a matching battery. The battery is installed on the protective frame and rotates with the motor 403.

[0021] like Figures 1 to 6 As shown, in order to assist the rotation of the protective frame, the inner wall of the protective frame is rotatably connected to a roller 6, and the roller 6 is in contact with the outer wall of the outer sheath 5. The protective frame is supported by the roller 6, and the rotation of the roller 6 reduces the resistance to the rotation of the protective frame. During the rotation of the roller 6, the surface of the outer sheath 5 can also be cleaned, and the dust on the surface of the outer sheath 5 is rolled off. The protective frame and the reinforcing rod 101 are in a moving state, which can reduce the retention of dust on the cable surface.

[0022] like Figure 6As shown, in order to realize convenient disassembly and assembly of the reinforcement component, the protective frame is a splicing structure, and the protective frame includes two splicing frames 501, one end of the splicing frame 501 is fixedly connected with a plug rod 502, and the other end of the splicing frame 501 is provided with a socket matching the plug rod 502, and the external fixed sleeve of the plug rod 502 is provided with a damping pad 503, and the damping pad 503 is in conflict with the inner wall of the socket. The protective frame can be conveniently disassembled and assembled through the sliding cooperation between the plug rod 502 and the socket. Under the action of the damping pad 503, there is a large sliding damping between the plug rod 502 and the socket, thereby ensuring the stability of the protection frame connection, and the stability of the protective frame is further enhanced under the action of the baffle 202 to prevent the two splicing frames 501 from detaching.

[0023] The working principle or use process of the high-voltage polyethylene cable for solar power generation is as follows: Insert the insertion rod 502 into the socket to install the protective frame outside the outer sheath 5. Move the two sets of protective frames closer together, pass the blocking piece 202 through the multiple connecting rings 201 of the two sets of protective frames close to each other, and fasten the male and female buckles to connect the blocking pieces 202 end to end to form a closed ring, thus connecting the two sets of reinforcement components. The protective frame and the reinforcing rod 101 protect the outside of the outer sheath 5. The motor 403 is turned on regularly, and the motor 403 drives the driving rod 401 and the driving block 402 to rotate. The driving block 402 knocks on the outer sheath 5 to shake off the dust on the surface of the outer sheath 5. At the same time, under the reaction force of the outer sheath 5, the driving rod 401 and the protective frame can be pushed to rotate around the outer sheath 5. The protective frame drives the reinforcing rod 101 and the cleaning rod 301 to rotate, and the cleaning rod 301 sweeps off the dust on the surface of the outer sheath 5 to reduce the accumulation of dust on the cable surface.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-voltage polyethylene cable for solar power generation, comprising a conductor (1), an insulating layer (2), an inner sheath (3), an armor layer (4) and an outer sheath (5), wherein the insulating layer (2) is wrapped around the outside of the conductor (1), a filler is provided between the inner sheath (3) and the insulating layer (2), and the armor layer (4) and the outer sheath (5) are wrapped around the outside of the inner sheath (3) in sequence, characterized in that: Also includes: A reinforcement component, wherein a plurality of the reinforcement components are provided, and the reinforcement components are arranged outside the outer sheath (5), and the reinforcement components include: A protective frame, two of which are provided and are located outside the outer sheath (5); A reinforcing rod (101), the reinforcing rod (101) being fixedly connected between the two protective frames; A connecting assembly, the connecting assembly being used to connect two adjacent reinforcing assemblies; A cleaning component is mounted on the reinforcing component and is used to clean the outside of the outer sheath (5).

2. A high-voltage polyethylene cable for solar power generation according to claim 1, characterized in that: The connection component includes: A connecting ring (201), wherein a plurality of connecting rings (201) are provided, and the connecting ring (201) is fixedly connected to an end of the protective frame away from the reinforcing rod (101); A baffle (202), the baffle (202) passes through the plurality of connecting rings (201), and both ends of the baffle (202) are detachably connected.

3. A high-voltage polyethylene cable for solar power generation according to claim 2, characterized in that: The cleaning assembly comprises: A cleaning rod (301), wherein a plurality of cleaning rods (301) are provided, the cleaning rods (301) are fixedly connected to the reinforcing rod (101), and the cleaning rods (301) are in contact with the outer side of the outer sheath (5); A driving member is provided on the reinforcing assembly and is used for driving the protective frame to rotate.

4. A high-voltage polyethylene cable for solar power generation according to claim 3, characterized in that: The driving member includes: A driving rod (401), the driving rod (401) being rotatably disposed on the protective frame; A driving block (402) is fixedly connected to the outside of the driving rod (401) via an elastic plate (404), and the driving block (402) is in contact with the outer sheath (5).

5. A high-voltage polyethylene cable for solar power generation according to claim 4, characterized in that: The inner wall of the protective frame is rotatably connected to a roller (6), and the roller (6) is in contact with the outer wall of the outer sheath (5).

6. A high-voltage polyethylene cable for solar power generation according to claim 5, characterized in that: The protective frame is a splicing structure.

7. A high-voltage polyethylene cable for solar power generation according to claim 6, characterized in that: The protective frame comprises two splicing frames (501), one end of the splicing frame (501) is fixedly connected to an insertion rod (502), and the other end of the splicing frame (501) is provided with a socket matching the insertion rod (502).

8. A high-voltage polyethylene cable for solar power generation according to claim 7, characterized in that: The outer fixing sleeve of the insertion rod (502) is provided with a damping pad (503), and the damping pad (503) abuts against the inner wall of the insertion hole.

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