Salt-proof and mildew-proof photovoltaic cable

Abstract

The invention provides a salt-proof and mildew-proof photovoltaic cable, and belongs to the technical field of cable protection. Comprising a wire core, an insulating layer is arranged on the surface of the wire core, a protective layer is arranged at one end of the insulating layer, and a gap filling layer is arranged between the protective layer and the insulating layer; the cable also comprises an extension protection assembly, the surface of the protection layer is provided with the extension protection assembly, and the extension protection assembly is used for protecting the cable connection section from generating twisting force. Comprising a sliding anti-damage assembly, and the sliding anti-damage assembly is installed at the bottom of an extension protection assembly. The extension protection assembly and the cable connector assembly are arranged, so that the toughness of the cable is improved, heat dissipation is guaranteed, deformation caused by external pressure is reduced, invasion of alkaline substances is avoided, the structure is complete, mold breeding is prevented, potential safety hazards are reduced, a closed connector is rapidly installed, the laying efficiency is improved, and the service life is prolonged; the generation of hidden dangers is reduced, and the operation efficiency of the cable is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cable protection, and in particular to a salt-proof and mildew-proof photovoltaic cable. Background Art

[0002] A cable is a device for transmitting electrical energy or signals. It is usually a rope-like cable made up of several or several groups of wires twisted together. Each group of wires is insulated from each other and often twisted around a center wire. The entire outside is covered with a highly insulating covering. The cable has the characteristics of being powered inside and insulated outside.

[0003] Photovoltaic cable is a type of cable specially used in photovoltaic power generation systems. It is mainly used to connect photovoltaic modules, inverters, distribution boxes and other equipment. This type of cable is resistant to high temperature, cold, oil, acid and alkali, UV, flame retardant, environmentally friendly and has a long service life. It is particularly suitable for harsh climatic conditions.

[0004] During the installation of existing photovoltaic cables, due to their long length, the cables are often installed by dragging them on the ground. Since cables are used in many environments, it is often difficult to protect the outer surface of the cables for the sake of installation convenience. As a result, some hard objects, impurities and corrosive chemicals on the ground wear and corrode the outer surface of the cables during installation, and even worse, the protective layer may be scratched.

[0005] At the same time, when the cable is laid, due to its limited length, a joint is required to extend the length of the cable to meet the use requirements. However, the existing joints are inconvenient to operate, have poor tolerance, and are of low quality. When the cable is used for a long time, it is very easy to cause deviations in the joint part, resulting in excessive resistance at the joint and damage to the equipment.

[0006] The existing photovoltaic cables themselves have poor toughness, which makes the cables easily damaged during the laying process. Due to the lack of toughness, the heat generated by the cables after power is turned on is difficult to dissipate effectively, increasing the risk of cable overheating. It not only increases the difficulty of the laying process and affects the normal use of the cables, but also, during long-term use of the cables, they are susceptible to corrosion and mechanical damage from external media, resulting in reduced insulation and mechanical levels at thin points of the cable sheath, thereby affecting the service life of the cable. It is also easy for the cables to be susceptible to external pressure or deformation during use, resulting in poor contact or leakage between the internal conductor and the insulation layer of the cable, thereby increasing electrical safety hazards. Therefore, the present application provides a salt and mildew proof photovoltaic cable to meet the needs. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a salt-proof and mildew-proof photovoltaic cable to solve the problem that during the installation of existing photovoltaic cables, due to the long length of the cable, the cable is often installed by dragging it on the ground during the installation process. Since the cable is used in many environments, it is often difficult to protect the outer surface of the cable for the sake of convenience in installation.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] A salt and mildew proof photovoltaic cable comprises a wire core, an insulating layer is arranged on the surface of the wire core, a protective layer is arranged on one end of the insulating layer, and a gap filling layer is arranged between the protective layer and the insulating layer; it also comprises an extension protection component, an extension protection component is arranged on the surface of the protective layer, and the extension protection component is used to protect the cable connection end from being tightened; it comprises a sliding anti-damage component, a sliding anti-damage component is installed on the bottom of the extension protection component, and the sliding anti-damage component is used to prevent wear on the cable body during installation and use; it comprises a cable connector component, a cable connector component is installed on one end of the extension protection component, and the cable connector component is used to facilitate the connection and sealing of the cable.

[0010] Optionally, the insulating layer is provided in a plurality of groups, and the plurality of insulating layers are divided into a plurality of gap filling layers inside the protective layer, and the gap filling layers have different sizes.

[0011] Optionally, the extension protection component includes a metal buffer sheet, which is arranged on the surface of the protective layer. The metal buffer sheet is arranged in multiple groups, and the multiple groups of metal buffer sheets are overlapped and placed on the surface of the protective layer. A support layer is installed on the outer surface of the metal buffer sheet.

[0012] Optionally, a scissor support layer is installed on the outer surface of the support layer, a stress extension layer is installed at one end of the scissor support layer, a guide and reverse thrust pipe is installed on the outer surface of the stress extension layer, and a wind receiving groove is installed at the open end of the guide and reverse thrust pipe.

[0013] Optionally, the sliding anti-damage component includes a slide groove track, the slide groove track is installed at the bottom of the diversion reverse thrust pipe, and the interior of the slide groove track is slidably connected to a support frame.

[0014] Optionally, a spring 1 is installed inside the support frame, one end of the spring 1 is installed on the inner wall of one end of the slide track, and a rotating shaft is installed at one end of the support frame.

[0015] Optionally, a roller is rotatably connected to the surface of the rotating shaft, a positioning pile is installed at the bottom of the slide groove track, and damping arc blocks are rotatably connected to both sides of the inner wall of the slide groove track.

[0016] Optionally, the cable connector assembly includes a connector pile, which is installed on the outer surface of the diversion reverse thrust tube, and an alloy extension ring tube is installed inside the connector pile, and the other end of the alloy extension ring tube is in contact with the groove part of the cable groove end connector pile.

[0017] Optionally, a touch block is installed on the surface of the joint pile, a pin block is inserted into the inside of the touch block, a spring 2 is installed inside the touch block, a cylindrical pin is installed at one end of the touch block, and the cylindrical pin passes through spring 2 and is installed at one end of the touch block.

[0018] Optionally, a slide column is installed at one end of the spring 2, and the internal slide groove of the slide column is slidably connected to one end of the pin block. One end of the pin block is installed on the surface of a cylindrical pin, and a lock pendulum block is installed at one end of the cylindrical pin. The surface groove of the cable groove end connector pile is on the movement trajectory of the lock pendulum block.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] In the above scheme, by setting an extension protection component, utilizing the cooperation among the metal buffer sheet, the support layer, the scissor bracket layer, the stress extension layer, the flow guide reverse thrust tube and the wind receiving slot, the toughness of the cable during installation is improved, and the internal twisting force during installation is avoided, which may cause damage to the internal wire core. At the same time, the buffering force is improved, the toughness of the cable is increased, and the heat is ensured to be dissipated, while reducing the risk of cable overheating and ensuring the insulation level of the insulation layer. The scissor bracket layer avoids the deformation of the cable caused by external pressure during use, and the force is reduced by its own scissor structure. , and perform the retraction and expansion movement to dissolve it, buffer and protect the cable structure, avoid leakage between the conductor and the insulation layer, and avoid the invasion of alkaline substances. At the same time, the structural integrity ensures the cleanliness of the interior, prevents the growth of mold, and avoids leakage due to poor contact between the inside of the cable and the insulation layer, reducing safety hazards and affecting its service life. When the wind blows, the setting of the wind trough guides the wind through the guide reverse thrust pipe to form a reverse thrust, which ensures the movement range of the cable, ensures its own stability, and avoids mechanical damage, thereby causing corrosion and invasion of external media.

[0021] By setting up a sliding anti-damage component and utilizing a slide track, a support frame, a spring, a rotating shaft, a roller, a positioning pile and a damping arc block, the roller can be placed down when the cable is installed to provide assistance for the movement of the cable, thereby reducing the difficulty in the cable laying process and avoiding the dragging of the cable on the ground. This ensures the integrity of the cable protective layer structure and prevents damage to the cable protective layer, which may lead to the invasion of alkaline substances and mold. While protecting the integrity of the outer surface structure, the roller can be retracted and kept on the same horizontal plane with the cable, thereby increasing the overall weight of the cable, reducing the amplitude of the cable swaying due to wind, reducing the amplitude of its torsion, protecting the integrity of the cable core, preventing deformation, reducing the breeding of safety hazards and ensuring the efficiency of cable operations.

[0022] By setting up a cable connector assembly and utilizing the cooperation among the push-contact block, pin block, spring 2, slide column, cylindrical pin, locking block, connector pile and alloy extension tube, when the cable is laid, the two groups of coaxial cables can be quickly connected together through the connector pile. The connector pile drives the movement of the push-contact block. When the locking block moves to the inside of the other group of connector piles, it rotates and locks inside to overlap the two groups of connector piles. At the same time, the alloy extension tube forms a closed space at the connection between the two ends to prevent the entry of impurities. While being easy to install, the connection is firm. While the quality itself is high, its service life is increased to avoid the probability of deviation at the joint during long-term use, thereby extending the service life of the equipment and ensuring the current flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0024] Figure 1 This is a schematic diagram of the main three-dimensional structure of the salt-proof and mildew-proof photovoltaic cable;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the convex contact end of the salt-proof and mildew-proof photovoltaic cable;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the groove end of the salt-proof and mildew-proof photovoltaic cable;

[0027] Figure 4 This is a schematic diagram of the planar structure of the convex contact end of the salt-proof and mildew-proof photovoltaic cable;

[0028] Figure 5 It is a schematic diagram of the planar structure of the extended protection component;

[0029] Figure 6 It is a three-dimensional structural schematic diagram of the positional relationship between the sliding damage prevention component and the extension protection component;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the sliding anti-damage component;

[0031] Figure 8 It is a three-dimensional structural diagram showing the position relationship between the contact block and the joint pile;

[0032] Fig. 9 It is a schematic diagram of the planar structure of the cable connector assembly;

[0033] Fig.10 It is a schematic diagram of the internal three-dimensional structure of the touch block.

[0034] Reference numerals:

[0035] 1. Wire core; 2. Insulation layer; 3. Gap filling layer; 4. Protective layer; 5. Extended protection component; 51. Metal buffer sheet; 52. Support layer; 53. Scissor bracket layer; 54. Stress extension layer; 55. Flow guide reverse thrust tube; 56. Wind receiving slot; 6. Sliding damage prevention component; 61. Slide track; 62. Support frame; 63. Spring 1; 64. Rotating shaft; 65. Roller; 66. Positioning pile; 67. Damping arc block; 7. Cable connector assembly; 71. Touch block; 72. Pin block; 73. Spring 2; 74. Slide column; 75. Cylindrical pin; 76. Locking head pendulum block; 77. Connector pile; 78. Alloy extended ring tube.

[0036] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0037] The following is a detailed description of a salt and mildew proof photovoltaic cable provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0038] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0039] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0040] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0041] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0042] like Figures 1 to 10 As shown, an embodiment of the present invention provides a salt-proof and mildew-proof photovoltaic cable, including a wire core 1, an insulating layer 2 is provided on the surface of the wire core 1, a protective layer 4 is provided at one end of the insulating layer 2, and a gap filling layer 3 is provided between the protective layer 4 and the insulating layer 2; it also includes an extension protection component 5, the surface of the protective layer 4 is provided with an extension protection component 5, and the extension protection component 5 is used to protect the cable connection section from twisting; it includes a sliding anti-damage component 6, the bottom of the extension protection component 5 is installed with the sliding anti-damage component 6, and the sliding anti-damage component 6 is used to prevent wear on the cable body during installation and use; it includes a cable connector component 7, one end of the extension protection component 5 is installed with the cable connector component 7, and the cable connector component 7 is used to facilitate the connection and sealing of the cable.

[0043] As an implementation method in this embodiment, Figures 4 to 7As shown, the insulating layer 2 is provided with multiple groups, and the multiple groups of insulating layers 2 are divided into multiple groups of gap filling layers 3 inside the protective layer 4, and the sizes of the gap filling layers 3 are different. The extension protection component 5 includes a metal buffer sheet 51, and the metal buffer sheet 51 is arranged on the surface of the protective layer 4. The metal buffer sheet 51 is provided with multiple groups, and the multiple groups of metal buffer sheets 51 are overlapped and placed on the surface of the protective layer 4. The outer surface of the metal buffer sheet 51 is installed with a support layer 52, and the outer surface of the support layer 52 is installed with a scissor bracket layer 53, and one end of the scissor bracket layer 53 is installed with a stress extension layer 54, and the outer surface of the stress extension layer 54 is installed with a guide reverse thrust pipe 55, and the open end of the guide reverse thrust pipe 55 is installed with a wind receiving groove 56. The extension protection component 5 is wrapped around the cable for laying operations. During the laying process, the cable is affected by external force, and torque is generated and transmitted to the cable. At this time, the metal The buffer sheet 51 contracts under the influence of the torsion, buffers the force, and adheres to the surface of the cable protective layer 4, reducing the degree of torsion of the cable. Then, when the metal buffer sheet 51 contracts, the support layer 52 begins to support and receives the force transmitted by the metal buffer sheet 51. Then the support layer 52 transmits the force to the scissor support layer 53. When the scissor support layer 53 is subjected to the force, it is deformed. When the scissor support layer 53 is subjected to the force and deforms, the stress extension layer 54 moves with the scissor support layer 53. At the same time, when the lateral wind blows toward the cable, the wind receiving groove 56 begins to absorb the wind. After the wind is absorbed by the wind receiving groove 56, the wind moves to the inside of the guide reverse thrust tube 55 through the wind receiving groove 56. After the wind moves to the inside of the guide reverse thrust tube 55, it flows to the other end through the pipeline of the guide reverse thrust tube 55 and is discharged outward from the wind receiving groove 56 at the other end.

[0044] As an implementation method in this embodiment, Figure 6 to Figure 7As shown, the sliding anti-damage component 6 includes a slide groove track 61, which is installed at the bottom of the guide reverse thrust tube 55. The interior of the slide groove track 61 is slidably connected to a support frame 62, and a spring 63 is installed inside the support frame 62. One end of the spring 63 is installed on the inner wall of one end of the slide groove track 61, and a rotating shaft 64 is installed at one end of the support frame 62. The surface of the rotating shaft 64 is rotatably connected to a roller 65. A positioning pile 66 is installed at the bottom of the slide groove track 61, and damping arc blocks 67 are rotatably connected on both sides of the inner wall of the slide groove track 61. When the photovoltaic cable is laid and installed, the sliding anti-damage component 6 is opened, and the support frame 62 is moved downward along the slide groove inside the slide groove track 61, and the support frame 62 is moved along the slide groove track 61 to the position of the positioning pile 66. , the support frame 62 continues to move forward along the inclined surface of the positioning pile 66. When the support frame 62 continues to move, one end of the support frame 62 presses against the arc surface of the damping arc block 67 to make it flip inward. When the support frame 62 is pressed by the back of the damping arc block 67, it stops moving. At this time, the spring 1 63 moves with the support frame 62. At the same time, the roller 65 moves with the support frame 62 to the bottom end and fits the ground. When the cable is laid, the roller 65 rotates on the surface of the shaft 64 to assist the cable to move and protect the cable from wear. When the cable is laid, the damping arc block 67 is manually retracted. When the damping arc block 67 is retracted, the support frame 62 is affected by the elastic force of the spring 1 63 and will quickly return to its original position.

[0045] As an implementation method in this embodiment, Figures 2 to 10As shown, the cable connector assembly 7 includes a connector pile 77, which is installed on the outer surface of the flow guide reverse thrust tube 55, and an alloy extension ring tube 78 is installed inside the connector pile 77. The other end of the alloy extension ring tube 78 fits with the groove part of the connector pile 77 at the cable groove end. A touch block 71 is installed on the surface of the connector pile 77, and a pin block 72 is inserted into the inside of the touch block 71. A spring 2 73 is installed inside the touch block 71, and a cylindrical pin 75 is installed at one end of the touch block 71. The cylindrical pin 75 runs through the spring 2 73 installed at one end of the touch block 71. One end of the spring 73 is equipped with a slide column 74, the internal slide of the slide column 74 is slidably connected to one end of the pin block 72, one end of the pin block 72 is mounted on the surface of the cylindrical pin 75, one end of the cylindrical pin 75 is equipped with a lock swing block 76, the surface groove of the cable groove end connector pile 77 is on the movement track of the lock swing block 76, when one end of the photovoltaic cable is laid, the cable connector assembly 7 starts to connect the cable connector part, and connects the cable connector assembly 7 at the other end, so that the convex contact end cable connector pile 77 is close to the groove end cable connector pile 77, the lock swing block 76 is The groove on the surface of the quasi-connector pile 77 is moved into the groove. When the lock pendulum block 76 moves into the inside of the connector pile 77, the cable is continuously moved, and the coaxial cables at both ends continue to approach each other. When the cable continues to move, the connector pile 77 continues to move. When the lock pendulum block 76 presses against the inner wall of the connector pile 77, the other end of the contact block 71 starts to move. When the contact block 71 moves, the spring 2 73 contracts. When the spring 2 73 contracts, the contact block 71 drives the cylindrical pin 75 to move. When the cylindrical pin 75 moves, the surface-mounted pin block 72 is in the slide groove column 74. When the pin block 72 moves along the slide groove inside the slide groove column 74, it drives the cylindrical pin 75 to flip over. When the cylindrical pin 75 flips over, the lock pendulum block 76 installed at one end of the cylindrical pin 75 flips over. After the lock pendulum block 76 flips over, it is fixed in the groove inside the joint pile 77. At the same time, when the joint pile 77 moves, it drives the alloy extension circle tube 78 to move synchronously. When the joint piles 77 at both ends are fitted together, one end of the alloy extension circle tube 78 is connected to the inner groove of the joint pile 77 at the other end to form a closed space.

[0046] The working principle of the technical solution provided by the present invention is as follows:

[0047] First, move the photovoltaic cable to the working area, straighten the wound cable to ensure that the core 1 and the insulating layer 2 are in a straight state, and then check whether there are any damaged areas on the outer surface of the protective layer 4. After the inspection, check the integrity of the gap filling layer 3 to see whether it is completely filled between the insulating layer 2 and the protective layer 4. After the inspection is completed.

[0048] The extension protection component 5 is wrapped around the cable for laying. During the laying process, the cable is affected by external force, which generates torque transmitted to the cable. At this time, the metal buffer sheet 51 is affected by the torque and shrinks to buffer the force and adhere to the surface of the cable protection layer 4, reducing the twisting degree of the cable. Then, when the metal buffer sheet 51 shrinks, the support layer 52 starts to support and receives the force transmitted by the metal buffer sheet 51. Then, the support layer 52 transmits the force to the scissor support layer 53. When the scissor support layer 53 is subjected to force, it is deformed. When the scissor support layer 53 When deformation occurs under stress, the stress extension layer 54 moves with the scissor support layer 53. At the same time, when lateral wind blows toward the cable, the wind receiving slot 56 begins to absorb the wind. After the wind is absorbed by the wind receiving slot 56, the wind moves to the inside of the diversion reverse thrust tube 55 through the wind receiving slot 56. After the wind moves to the inside of the diversion reverse thrust tube 55, it flows to the other end through the pipeline of the diversion reverse thrust tube 55 and is discharged outward from the wind receiving slot 56 at the other end. Due to the change of wind from a large area to a small area, a reaction thrust is generated when the wind is discharged, so that the cable is in a relatively stable state in the wind.

[0049] When the photovoltaic cable is being laid and installed, the sliding anti-damage component 6 is opened, and the support frame 62 is moved downward along the slide groove inside the slide groove track 61, and the support frame 62 is moved along the slide groove track 61 to the position of the positioning pile 66, and the support frame 62 continues to move forward along the inclined surface of the positioning pile 66. When the support frame 62 continues to move, one end of the support frame 62 supports the arc surface of the damping arc block 67 to make it flip inward. When the support frame 62 is supported by the back of the damping arc block 67, it stops moving. At this time, the spring 1 63 moves with the support frame 62, and the spring 1 63 moves with the support frame 62. When the cable is laid, the roller 65 rotates on the surface of the shaft 64 to assist the cable in moving, while protecting the cable from wear. When the cable is laid, the damping arc block 67 is manually retracted. When the damping arc block 67 is retracted, the support frame 62 is acted upon by the elastic force of the spring 63 and quickly returns to its original position, keeping it on the same horizontal plane as the cable, thereby adding weight to the cable and determining whether the cable is twisted due to the influence of torque.

[0050] When the photovoltaic cable at one end is laid, the cable connector assembly 7 starts to connect the cable connector part and connects the cable connector assembly 7 at the other end, so that the convex contact end cable connector pile 77 approaches the groove end cable connector pile 77, and the locking pendulum block 76 is aligned with the groove on the surface of the connector pile 77 and moves into it. When the locking pendulum block 76 moves to the inside of the connector pile 77, the cable continues to move, and the coaxial cables at both ends continue to approach each other. When the cable continues to move, the connector pile 77 continues to move. When the locking pendulum block 76 presses against the inner wall of the connector pile 77, the other end press block 71 starts to move. When the press block 71 moves, the spring 2 73 contracts. When the spring 2 73 contracts, the press block 71 It drives the cylindrical pin 75 to move. When the cylindrical pin 75 moves, the surface-mounted pin block 72 moves on the slide groove inside the slide groove column 74. When the pin block 72 moves along the slide groove inside the slide groove column 74, it drives the cylindrical pin 75 to flip over. When the cylindrical pin 75 flips over, the lock pendulum block 76 installed at one end of the cylindrical pin 75 flips over. After the lock pendulum block 76 flips over, it is fixed in the groove inside the joint pile 77. At the same time, when the joint pile 77 moves, it drives the alloy extension ring tube 78 to move synchronously. When the joint piles 77 at both ends are fitted together, one end of the alloy extension ring tube 78 is connected to the inner groove of the joint pile 77 at the other end to form a closed space.

[0051] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A salt-proof and mildew-proof photovoltaic cable, characterized in that: It comprises a wire core, the surface of the wire core is provided with an insulating layer, one end of the insulating layer is provided with a protective layer, and a gap filling layer is provided between the protective layer and the insulating layer; It also includes an extension protection component, the surface of the protective layer is provided with an extension protection component, and the extension protection component is used to protect the cable connection end from being tightened; A sliding anti-damage component is installed at the bottom of the extension protection component, and the sliding anti-damage component is used to prevent wear on the cable body during installation and use; A cable connector assembly is installed at one end of the extension protection assembly, and the cable connector assembly is used to facilitate the connection and sealing of cables.

2. The salt-proof and mildew-proof photovoltaic cable according to claim 1, characterized in that: The insulating layers are provided in a plurality of groups, and the plurality of insulating layers are divided into a plurality of gap filling layers inside the protective layer, and the gap filling layers have different sizes.

3. The salt-proof and mildew-proof photovoltaic cable according to claim 1, characterized in that: The extension protection component includes a metal buffer sheet, which is arranged on the surface of the protective layer. The metal buffer sheet is arranged in multiple groups, and the multiple groups of metal buffer sheets are overlapped and placed on the surface of the protective layer. A support layer is installed on the outer surface of the metal buffer sheet.

4. The salt-proof and mildew-proof photovoltaic cable according to claim 3, characterized in that: A scissor support layer is installed on the outer surface of the support layer, a stress extension layer is installed at one end of the scissor support layer, a flow guide reverse thrust pipe is installed on the outer surface of the stress extension layer, and a wind receiving groove is installed at the open end of the flow guide reverse thrust pipe.

5. The salt-proof and mildew-proof photovoltaic cable according to claim 1, characterized in that: The sliding anti-damage component comprises a slide groove track, and the slide groove track is installed at the bottom of the diversion reverse thrust pipe, and the interior of the slide groove track is slidably connected to a support frame.

6. The salt-proof and mildew-proof photovoltaic cable according to claim 5, characterized in that: A spring 1 is installed inside the support frame, one end of the spring 1 is installed on the inner wall of one end of the slide track, and a rotating shaft is installed at one end of the support frame.

7. The salt-proof and mildew-proof photovoltaic cable according to claim 6, characterized in that: A roller is rotatably connected to the surface of the rotating shaft, a positioning pile is installed at the bottom of the slide groove track, and damping arc blocks are rotatably connected to both sides of the inner wall of the slide groove track.

8. The salt-proof and mildew-proof photovoltaic cable according to claim 1, characterized in that: The cable joint assembly includes a joint pile, which is installed on the outer surface of the diversion reverse thrust pipe. An alloy extension ring tube is installed inside the joint pile, and the other end of the alloy extension ring tube is in contact with the groove part of the cable groove end joint pile.

9. The salt-proof and mildew-proof photovoltaic cable according to claim 8, characterized in that: A touch block is installed on the surface of the joint pile, a pin block is inserted into the interior of the touch block, a second spring is installed inside the touch block, a cylindrical pin is installed at one end of the touch block, and the cylindrical pin passes through the second spring and is installed at one end of the touch block.

10. The salt-proof and mildew-proof photovoltaic cable according to claim 9, characterized in that: A slide column is installed at one end of the spring 2, and the internal slide groove of the slide column is slidably connected to one end of the pin block. One end of the pin block is installed on the surface of the cylindrical pin, and a lock pendulum block is installed at one end of the cylindrical pin. The surface groove of the cable groove end connector pile is on the movement trajectory of the lock pendulum block.

Images