A cable surface rapid blowing device based on wind circulation

Abstract

The application belongs to the technical field of cable manufacturing in the smart grid industry, in particular to a cable surface rapid blowing drying device based on wind circulation, which comprises a wind drying box; one end of the wind drying box is fixedly connected with a three-jaw chuck; according to the different diameters of the cables to be blown dry, the three claws of the three-jaw chuck are adaptively adjusted to slide, the connecting plates connected with the three claws and the filler blocks are synchronously slid to approach or move away, which can flexibly adapt to different diameters of cross-linked polyethylene insulated power cables, the three filler blocks control the space change of the internal passage of the wind drying box according to the cable diameter, so that the internal passage of the wind drying box keeps the space size of the wind flow, and ensures that no matter the cable diameter, the wind can uniformly blow the cable surface at a suitable flow rate and pressure, thereby realizing rapid and uniform drying effect, this design not only improves the applicability of the device, but also ensures the stability and high efficiency in the process of different specifications of cables, and improves the blowing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of cable manufacturing technology in the smart grid industry, specifically a cable surface rapid drying device based on wind power circulation. Background Technology

[0002] The smart grid industry is the core engine driving the digital transformation of the energy system. It deeply integrates the Internet of Things, artificial intelligence and advanced communication technologies to build a modern power ecosystem with self-healing, interactive and optimization capabilities. Cross-linked polyethylene insulated power cables, as the connectors of this ecosystem, have become the key physical carriers supporting the efficient transmission of high-voltage power, flexible access of distributed energy sources and safe operation in complex environments in the smart grid, thanks to their excellent heat resistance, high insulation strength and reliable mechanical properties. Together, they empower the power grid to evolve towards a resilient and intelligent future.

[0003] Cross-linked polyethylene (XLPE) insulated power cables are core equipment in modern smart grid power transmission systems. They are made by chemically and physically cross-linking polyethylene molecular chains into a three-dimensional network structure, thereby achieving excellent thermosetting properties. This structure makes their performance stable, while also possessing excellent electrical insulation, high mechanical strength, and resistance to environmental stress cracking. With their advantages such as light weight, unrestricted laying height, no risk of oil contamination, and easy maintenance, they have completely replaced traditional oil-impregnated paper insulated cables and become the backbone of medium and high voltage power grids, new energy power plants, and urban distribution networks.

[0004] The manufacturing of cross-linked polyethylene insulated power cables begins with the stranding and compression of the conductors. Its core lies in the three-layer co-extrusion process. In an ultra-clean environment, the conductors are sequentially and simultaneously extruded with an inner semi-conductive layer, a cross-linked polyethylene insulation layer, and an outer semi-conductive layer. Subsequently, the cable enters a cross-linking pipeline filled with high-pressure nitrogen, where it completes the critical transformation from thermoplastic to thermosetting at high temperatures. The cross-linked cable is cooled with deionized water. Finally, a metal shield is wrapped around it, and after the outer sheath is extruded, it is cooled and shaped in a water-cooling tank. The cable surface is then rapidly dried, and after inspection, it is coiled into a reel.

[0005] In traditional processes, after the cable outer sheath is cooled in a water tank, a large amount of moisture adhering to its surface needs to be removed quickly. This is usually done using an open high-pressure air knife drying system. This system directly pressurizes the workshop air and uses it to form a high-speed air knife that impacts the cable surface through a ring of narrow nozzles, thereby peeling off the water film. The air carrying the moisture is then directly discharged into the workshop environment.

[0006] When rapidly drying the outer sheath of cross-linked polyethylene insulated power cables, the traditional air-drying method uses a high-pressure air knife drying system to peel off the water film. Although this method is simple and direct, the ring-shaped high-pressure nozzles are usually fixed, making it difficult to adjust their position for drying according to the different diameters of the cables. This can easily affect the drying efficiency for cables of different diameters.

[0007] Therefore, the present invention provides a cable surface rapid drying device based on wind circulation. Summary of the Invention

[0008] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0009] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a cable surface rapid drying device based on wind circulation, comprising a drying box; a three-jaw chuck is fixedly connected to one end of the drying box; a connecting plate is fixedly connected to each of the three jaws of the three-jaw chuck; a filling block is fixedly connected to the connecting plate; multiple air holes are opened on the filling block; a blowing assembly is provided on the filling block, and a fan is externally connected to the blowing assembly, which is used to blow air into the interior of the drying box to dry the surface of cross-linked polyethylene insulated power cables; a circulation box is fixedly connected to the end of the drying box away from the three-jaw chuck, and an air guide ring groove is provided at the end of the circulation box near the three-jaw chuck, and the circulation box is connected to the interior of the drying box; multiple air ducts are fixedly connected between the circulation box and the blowing assembly.

[0010] Preferably, the blower assembly includes an air guide box and a distribution pipe; multiple air guide boxes are fixedly connected to the drying box, and the circulation box can be connected to the air guide box through an air duct; multiple distribution pipes are fixedly connected between the filling block and the air guide box.

[0011] Preferably, a flexible block is fixed between the two filling blocks; a flexible plate is fixed to the flexible block, the side of the flexible plate away from the flexible block is set as an arc surface, and multiple air holes face the arc surface of the flexible plate.

[0012] Preferably, the multiple air holes are opened at an angle; multiple guide strips are fixed to the arc surface of the flexible plate, and the multiple guide strips are set at an angle.

[0013] Preferably, the drying box has two electric sliders slidably connected inside; one end of each electric slider is fixedly connected to a connecting frame, and the cross-sectional shape of the connecting frame is U-shaped; two sponge blocks are fixedly connected to the connecting frame.

[0014] Preferably, the end of the sponge block near the three-jaw chuck has an inclined surface; the sponge block has multiple air guide grooves.

[0015] Preferably, an electric heater is fixedly connected to each of the multiple air guide boxes; multiple conductive rods are fixedly connected to each electric heater, and the multiple conductive rods are located inside the air guide box; a first air guide pipe is fixedly connected to each of the three air ducts; an annular plate is fixedly connected to each of the three first air guide pipes, and the annular plate is located inside the drying box; multiple first oblique air holes are opened on the inner wall of the annular plate; multiple second oblique air holes are opened on the annular plate facing the sponge block.

[0016] Preferably, rubber rings are fixedly connected to the three jaws of the three-jaw chuck; a water scraping groove is formed on the inner wall of the rubber rings; a second air guide pipe is fixedly connected to the end of the plurality of air ducts away from the circulation box; a fixed air box is fixedly connected to the three second air guide pipes; a plurality of inclined water blowing holes are formed on the inner wall of the fixed air box; two opposing water blowing grooves are formed on the fixed air box; a sealing plate is slidably connected to the inner wall of the fixed air box; two corresponding grooves are formed on the sealing plate, and the corresponding grooves correspond to the water blowing grooves.

[0017] Preferably, a friction ring is fixed to the inner wall of the rubber ring; the friction ring is made of sponge material.

[0018] Preferably, the drying box has multiple ventilation holes at the end away from the three-jaw chuck; the ventilation holes are connected to multiple sponge blocks.

[0019] The beneficial effects of this invention are as follows: 1. The present invention discloses a rapid cable surface drying device based on wind circulation. The cable is pulled inside a drying box, and an external fan connected to the blowing assembly blows air into the drying box. The air is guided by the blowing assembly to multiple air holes and blown onto the cable surface, drying the water. The air circulates inside the drying box until it reaches the circulation box, where it is partially collected by the air guide groove. The air guide groove is an arc-shaped groove that can return the air. The air then enters the air duct and returns to the blowing assembly for circulation. The dried portion of the cable surface is pulled out, achieving rapid drying of the surface of cross-linked polyethylene insulated power cables based on wind circulation. Simultaneously, when rapidly drying the outer sheath surface of cross-linked polyethylene insulated power cables of different diameters, the sliding of the three claws of the three-jaw chuck is adaptively adjusted according to the cable diameter to be dried. The connecting plate and the filling block connected to the three claws slide synchronously closer or further away. Through this design, the device can... This device is highly adaptable to cross-linked polyethylene insulated power cables of varying diameters. Three filler blocks control the spatial variation of the internal channels of the drying chamber according to the cable diameter, ensuring consistent airflow space. This guarantees that regardless of cable diameter, airflow is evenly applied to the cable surface at a suitable speed and pressure, effectively removing surface moisture and achieving rapid and uniform drying. This design not only improves the device's applicability but also ensures stability and efficiency in processing cables of different specifications, enhancing drying efficiency. Furthermore, the ductwork not only enables air circulation, reducing energy waste, but also collects and guides some airflow through the air guide ring groove, making airflow within the device smoother and further improving the drying effect. In practical applications, the device is easy to operate; simply adjusting the position of the three-jaw chuck according to the cable diameter is sufficient to begin drying operations, improving both drying efficiency and operational convenience.

[0020] 2. The present invention discloses a rapid cable surface drying device based on wind circulation. The cable passes through four sponge blocks located inside a drying chamber. The four sponge blocks conform to the deformation of the cable surface. Two sponge blocks are arranged opposite each other as a group, and the two groups of sponge blocks are spaced apart and crossed. As the cable passes through the two groups of sponge blocks, two electric sliders drive two connecting frames to slide, causing the four sponge blocks to reciprocate and wipe the cable surface. The conforming design of the four sponge blocks closely follows the contour of the cable surface, effectively removing residual moisture and impurities, further improving the dryness and cleanliness of the cable surface. Furthermore, the two groups... The crisscross arrangement of the sponge blocks not only enhances the comprehensiveness of wiping but also avoids missed areas during the wiping process, ensuring that the cable surface is dried evenly. This design not only improves the drying efficiency of the device but also enhances its adaptability and stability, enabling the device to be widely used in the rapid drying of the surface of cross-linked polyethylene insulated power cables of different specifications. At the same time, the four sponge blocks slide back and forth inside the drying box, and there is space between the sponge blocks and the drying box. The air flowing inside the drying box can pass through the space to dry the areas of the sponge blocks that are not in contact with the cable, thereby achieving the drying treatment of the sponge blocks and improving the wiping effect on the cable surface. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the connecting plate in this invention; Figure 3 This is a schematic diagram of the structure of the air vent in this invention; Figure 4 This is a schematic diagram of the flow guide strip in this invention; Figure 5 This is a schematic diagram of the conductive rod in this invention; Figure 6 This is a schematic diagram of the connecting frame in this invention; Figure 7 This is a schematic diagram of the electric slider in this invention; Figure 8 This is a schematic diagram of the air guide channel in this invention; Figure 9 This is a schematic diagram of the scraper groove structure in this invention; Figure 10 This is a schematic diagram of the air vent structure in this invention; Figure 11 This is a schematic diagram of the air vent structure in this invention; Figure 12 This is a schematic diagram of the structure of the vent holes in this invention.

[0023] In the diagram: 1. Drying box; 11. Three-jaw chuck; 12. Connecting plate; 13. Filler block; 14. Air vent; 15. Circulation box; 16. Air duct; 2. Air guide box; 21. Diverter pipe; 3. Flexible block; 31. Flexible plate; 4. Guide strip; 5. Electric slider; 51. Connecting frame; 52. Sponge block; 6. Air guide channel; 7. Electric heater; 71. Conducting rod; 72. No. 1 air guide pipe; 73. Ring plate; 74. No. 1 inclined air vent; 75. No. 2 inclined air vent; 8. Rubber ring; 81. Squeegee groove; 82. No. 2 air guide pipe; 83. Fixed air box; 84. Water blowing hole; 85. Water blowing groove; 86. Sealing plate; 87. Corresponding groove; 9. Friction ring; 91. Vent hole. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] The smart grid industry is the core of the digital transformation of the energy system. Through the deep integration of the Internet of Things, artificial intelligence and advanced communication technologies, a modern power ecosystem with self-healing, interactive and optimization capabilities is built. In this ecosystem, cross-linked polyethylene insulated power cables, as a key physical carrier, support the efficient transmission of medium and high voltage power, the flexible access of distributed energy sources and the safe and reliable operation of the power grid in complex environments with their stable three-dimensional mesh thermosetting structure, excellent electrical insulation performance and mechanical strength. They have become an indispensable infrastructure of the modern smart grid. Cross-linked polyethylene insulated power cables are usually used in conjunction with cable accessories, such as cable terminals and cable joints. Cable accessories are necessary components and devices for connecting, terminating and repairing cable lines. They are indispensable joints and terminals of the cable system. Their role is to rebuild and ensure the original electrical insulation, sealing protection and mechanical connection of the cable body at the cable terminal or intermediate connection point, thereby forming a safe, continuous and reliable transmission line. The manufacturing of cross-linked polyethylene insulated power cables begins with the precision machining of the conductor. Its core process lies in the co-extrusion of three layers: the inner semiconductive layer, the insulation layer, and the outer semiconductive layer. After high-temperature nitrogen cross-linking and curing followed by cooling, the cable needs to go through key processes such as outer sheath extrusion, water cooling and shaping, and surface drying. Among these, the traditional drying process often uses an open high-pressure air knife system to peel off the moisture on the sheath surface through high-speed airflow. Although effective, this process has problems such as high energy consumption and environmental impact.

[0026] In the manufacturing process of cross-linked polyethylene insulated power cables, in order to better and faster dry the surface of the power cable, such as... Figures 1 to 4 , Figure 9 , Figure 10As shown in the embodiment of the present invention, a cable surface rapid drying device based on wind circulation includes a drying box 1; a three-jaw chuck 11 is fixedly connected to one end of the drying box 1; a connecting plate 12 is fixedly connected to each of the three jaws of the three-jaw chuck 11; a filling block 13 is fixedly connected to the connecting plate 12; multiple air holes 14 are provided on the filling block 13; a blowing assembly is provided on the filling block 13, and a fan is externally connected to the blowing assembly, which is used to blow air into the drying box 1 to dry the surface of the cross-linked polyethylene insulated power cable; a circulation box 15 is fixedly connected to the end of the drying box 1 away from the three-jaw chuck 11, and an air guide ring groove is provided at the end of the circulation box 15 near the three-jaw chuck 11, and the circulation box 15 is connected to the interior of the drying box 1; multiple air ducts 16 are fixedly connected between the circulation box 15 and the blowing assembly; when rapidly drying the surface of the outer sheath of the cross-linked polyethylene insulated power cable... Using the drying box 1 as the main structure of the cable surface rapid drying device, the cable passes through the three-jaw chuck 11 and the center of the drying box 1. Two traction devices are connected to both ends of the cable for traction. When the cable is pulled to the three-jaw chuck 11, the water droplets on the cable surface are first cleaned off. A small amount of water adheres to the cable surface. The cable is pulled inside the drying box 1. The blower is connected to the blower assembly to blow air into the drying box 1. The air is guided by the blower assembly to multiple air holes 14 and blown onto the cable surface to dry the water on the cable surface. The air circulates inside the drying box 1 until it reaches the circulation box 15 and is partially collected by the air guide ring groove. The air guide ring groove is a curved ring groove that can send the air back. Then the air enters the air duct 16 and returns to the blower assembly for circulation. The dried part of the cable surface is pulled out, which plays the role of rapidly drying the surface of cross-linked polyethylene insulated power cable based on wind power circulation. Meanwhile, when rapidly drying the outer sheath surface of cross-linked polyethylene insulated power cables of different diameters, the sliding of the three claws of the three-jaw chuck 11 is adaptively adjusted according to the different diameters of the cables to be dried. The characteristic of the three-jaw chuck 11 is that when one claw is adjusted, the three claws can be adjusted synchronously. Therefore, the connecting plate 12 and the filling block 13 connected to the three claws slide synchronously closer or further away. When the diameter of the cable is small, the three claws of the three-jaw chuck 11 slide closer to each other, so that the three filling blocks 13 block part of the internal channel of the drying box 1, and the space of the internal channel of the drying box 1 becomes smaller. When the diameter of the cable is large, the three claws of the three-jaw chuck 11 slide further away from each other, so that the three filling blocks 13 slide into the inner wall of the drying box 1, opening the blocked area of ​​the internal channel of the drying box 1, and the space of the internal channel of the drying box 1 becomes larger. With this design, the device can flexibly adapt to cross-linked polyethylene insulated power cables of different diameters. The three filler blocks 13 control the spatial variation of the internal channel of the drying box 1 according to the cable diameter, so that the internal channel of the drying box 1 maintains the space size for airflow. This ensures that regardless of the cable diameter, the air can blow evenly on the cable surface at a suitable flow rate and pressure, thereby effectively removing surface moisture and achieving a fast and uniform drying effect. This design not only improves the applicability of the device, but also ensures the stability and efficiency in the processing of cables of different specifications, improving drying efficiency. In addition, the setting of the air duct 16 not only realizes the recycling of air and reduces energy waste, but also collects and guides the air through the air guide ring groove, making the air flow inside the device smoother and further improving the drying effect. In practical applications, the device is easy to operate. Simply adjust the position of the claws of the three-jaw chuck 11 according to the cable diameter to start the drying operation, improving drying efficiency and ease of operation.

[0027] The blowing assembly includes an air guide box 2 and a distribution pipe 21; multiple air guide boxes 2 are fixedly connected to the drying box 1, and the circulation box 15 can be connected to the air guide box 2 through the air duct 16; multiple distribution pipes 21 are fixedly connected between the filling block 13 and the air guide box 2; when blowing air into the internal channel of the drying box 1 to dry the surface of the outer sheath of the cross-linked polyethylene insulated power cable, multiple distribution pipes 21 are installed on each filling block 13, and multiple distribution pipes 21 are connected to the air guide box 2. The air guide box 2 is connected to an external fan. When the external fan is working, the air blown into the air guide box 2, and the air guide box 2 cooperates with the multiple distribution pipes 21 to dry the surface of the cross-linked polyethylene insulated power cable. The airflow pipe 21 disperses the air into the filling block 13, and then blows it through multiple air holes 14 to the cable surface inside the drying box 1 for drying. The design of multiple airflow pipes 21 ensures that the air is evenly dispersed, avoiding situations where the local air force is too strong or too weak, thereby ensuring that the cable surface is blown by a uniform and appropriate air force, improving the drying effect. At the same time, the connection design between the air guide box 2 and the air pipe 16 allows the air to return smoothly to the air guide box 2 through the air pipe 16 after drying the cable surface, forming a cycle of air force utilization, which saves energy and improves the overall efficiency of the device.

[0028] A flexible block 3 is fixedly connected between the two filling blocks 13; a flexible plate 31 is fixedly connected to the flexible block 3, the side of the flexible plate 31 away from the flexible block 3 is set as an arc surface, and multiple air holes 14 face the arc surface of the flexible plate 31; when the three filling blocks 13 slide to adjust the internal channel space of the drying box 1 with the three connecting plates 12, the three flexible blocks 3 connect the three filling blocks 13 together, and the three flexible blocks 3 can deform with the adjustment of the three filling blocks 13 to help block the internal channel of the drying box 1, while the flexible plate 31 is fixed on the flexible block 3 to guide the air blown by the air holes 14, and the multiple air holes 14 face the flexible plate 31. The curved design of the flexible plate 31 allows the air to be guided along the curved surface when it is blown out, which further enhances the air gathering effect and ensures that the air can be blown more concentratedly and evenly onto the cable surface. This design not only improves the utilization rate of the air and reduces the loss of air, but also makes the air force on the cable surface more uniform, thereby effectively improving the drying efficiency. At the same time, the deformation-assisted sealing function of the flexible block 3 allows the device to adjust the internal channel space more flexibly when adapting to cables of different diameters, ensuring that the airflow is always kept in the optimal state, further enhancing the applicability and stability of the device.

[0029] The multiple air holes 14 are inclined; multiple guide strips 4 are fixed to the arc surface of the flexible plate 31, and the multiple guide strips 4 are inclined; when the multiple inclined air holes 14 blow air into the internal channel of the drying box 1, the air blows towards the end of the drying box 1 away from the three-jaw chuck 11, and with the guidance of the multiple inclined guide strips 4 on the arc surface of the flexible plate 31, the air can form a cyclone in the drying box 1. This cyclone design can further enhance the contact effect between the air and the cable surface, so that the air can wrap the cable in all directions. It not only increases the blowing force of the air on the surface of the cable, but also effectively removes the residual moisture on the surface of the cable, achieving rapid drying. At the same time, the inclined air holes 14 and the guide strips 4 work together to make the air flow more orderly, avoid the turbulence and backflow of the air, reduce energy loss, and further improve the drying efficiency and energy utilization rate of the device.

[0030] like Figure 1 , Figures 6 to 8As shown, two electric sliders 5 are slidably connected inside the drying box 1; one end of each electric slider 5 is fixedly connected to a connecting frame 51, and the cross-sectional shape of the connecting frame 51 is U-shaped; two sponge blocks 52 are fixedly attached to the connecting frame 51; when the cross-linked polyethylene insulated power cable passes through the three-jaw chuck 11 into the internal channel of the drying box 1, the cable passes through four sponge blocks 52 located inside the drying box 1. The four sponge blocks 52 conform to the deformation of the cable surface. Two sponge blocks 52 are arranged opposite each other as a group, and the two groups of sponge blocks 52 are arranged alternately and crosswise. As the cable is dried by the air blowing inside the drying box 1, when the cable passes through the two groups of sponge blocks 52, the two electric sliders 5 respectively drive the two connecting frames 51 to slide, and the four sponge blocks 52 slide back and forth to wipe the surface of the cable. The conforming design of the four sponge blocks 52 can closely follow the cable. The surface contour effectively removes residual moisture and impurities, further improving the dryness and cleanliness of the cable surface. Furthermore, the cross-arrangement of the two sets of sponge blocks 52 not only enhances the comprehensiveness of the wiping but also avoids missed areas during the wiping process, ensuring that the cable surface is dried evenly. This design not only improves the drying efficiency of the device but also enhances its adaptability and stability, enabling the device to be widely used in the rapid drying of cross-linked polyethylene insulated power cables of different specifications. Simultaneously, the four sponge blocks 52 slide back and forth inside the drying box 1, with space between the sponge blocks 52 and the drying box 1. The airflow within the drying box 1 can pass through this space to dry the areas of the sponge blocks 52 that are not in contact with the cable, achieving the drying treatment of the sponge blocks 52 and improving the wiping effect on the cable surface.

[0031] The sponge block 52 has an inclined surface at one end near the three-jaw chuck 11; multiple air guide grooves 6 are formed on the sponge block 52; when the cross-linked polyethylene insulated power cable passes through the four sponge blocks 52, the inclined surface at the end of the sponge block 52 near the three-jaw chuck 11 guides the cable to pass through quickly and reduces resistance during cable insertion and friction during cable pulling. The multiple air guide grooves 6 on the sponge block 52 guide the airflow, allowing the sponge block 52 to be fully dried. The design of multiple air guide grooves 6 allows the air to pass evenly through all parts of the sponge block 52, ensuring that the sponge block 52 is fully dried while wiping the cable surface, avoiding the wiping effect being affected by moisture. This design not only improves the service life of the sponge block 52, but also ensures the continuous high efficiency of wiping the cable surface; in addition, the combination of the inclined surface and multiple air guide grooves 6 allows the airflow to be guided when passing through the sponge block 52, enhancing the airflow and drying effect, making the entire device more efficient and stable in the process of drying the cable surface.

[0032] like Figures 1 to 8 , Figure 10 , Figure 11As shown, multiple air guide boxes 2 are fixedly connected to electric heaters 7; multiple conductive rods 71 ​​are fixedly connected to the electric heaters 7, and the multiple conductive rods 71 ​​are located inside the air guide boxes 2; a first air guide 72 is fixedly connected to each of the three air ducts 16; an annular plate 73 is fixedly connected to the three first air guide ducts 72, and the annular plate 73 is located inside the drying box 1; multiple first oblique air holes 74 are opened on the inner wall of the annular plate 73; multiple second oblique air holes 75 are opened on the annular plate 73 facing the sponge block 52; when air is blown into the internal channel of the drying box 1 to dry the cable, the electric heaters 7 fixed on the air guide boxes 2 work to generate heat, the multiple metal conductive rods 71 ​​absorb the heat and conduct it to the inside of the air guide boxes 2, the air is heated when it flows inside the air guide boxes 2, so that the air blown into the internal channel of the drying box 1 becomes hot air, the hot air can evaporate the moisture on the surface of the cable and the sponge block 52 more quickly, significantly improving the drying speed. This design utilizes the principle of hot air drying, further enhancing the drying effect while maintaining air circulation. Simultaneously, the metal material of the conduction rod 71 ensures efficient heat conduction, allowing heat to be quickly and evenly transferred to the airflow, avoiding localized overheating and uneven drying. During air circulation within the air duct 16 and the air box 2, the three No. 1 air ducts 72 guide the circulating airflow to the annular plate 73. Hot air is blown obliquely from multiple No. 1 inclined air holes 74 onto the surface of the pulled cable. A drying space exists between the inner wall of the annular plate 73 and the cable, allowing the airflow from the multiple No. 1 inclined air holes 74 to assist in drying the cable surface. Part of the air entering the annular plate 73 is blown out obliquely from multiple No. 2 inclined air holes 75, reaching the two sponge blocks 52 at the front end that first wipe the cable surface. This accelerates the drying of the two sponge blocks 52, ensuring effective wiping of the cable by the two sponge blocks 52.

[0033] like Figure 1 and Figure 9 , Figure 10 , Figure 12As shown, rubber rings 8 are fixedly connected to the three jaws of the three-jaw chuck 11; a scraper groove 81 is formed on the inner wall of the rubber ring 8; a second air guide pipe 82 is fixedly connected to one end of the plurality of air ducts 16 away from the circulation box 15; a fixed air box 83 is fixedly connected to the three second air guide pipes 82; a plurality of inclined water blowing holes 84 are formed on the inner wall of the fixed air box 83; two opposing water blowing grooves 85 are formed on the fixed air box 83; a sealing plate 86 is slidably connected to the inner wall of the fixed air box 83; two corresponding grooves 87 are formed on the sealing plate 86, and the corresponding grooves 87 correspond to the water blowing grooves 85; when crosslinking Before the polyethylene insulated power cable passes through the three-jaw chuck 11, it is first passed through the sealing plate 86 and the fixed air box 83. There is space between the fixed air box 83, the sealing plate 86, and the cable. Part of the air circulating in the air duct 16 can be sent to the fixed air box 83 through the second air guide duct 82. For cables whose surfaces are not easily covered by water droplets, the sealing plate 86 is slid away from the multiple water-blowing holes 84. At this time, the multiple water-blowing holes 84 are open, and the two water-blowing grooves 85 are closed. The air from the multiple water-blowing holes 84 initially dries the surface of the pulled cable. For cables whose surfaces are easily covered by water droplets, the drying process... The sealing plate 86 is slid to seal multiple water blowing holes 84. At this time, the two water blowing channels 85 are in the open state. The two water blowing channels 85 are connected to three No. 2 air guide pipes 82 through the fixed air box 83. The air blowing from the two water blowing channels 85 initially dries the upper and lower surfaces of the pulled cable. Water droplets easily accumulate on the upper and lower surfaces of the cable. The accumulated air can easily blow off the water droplets, improving the subsequent drying effect on the cable surface. When the cross-linked polyethylene insulated power cable passes through the three-jaw chuck 11, the cable is aligned with the center of the rubber ring 8 and inserted. The rubber ring 8 can deform to fit the contour of the cable, so that the cable is pulled and scraped during the process. The water trough 81 can scrape water droplets off the cable, reducing the moisture content on the cable surface. It performs preliminary dehydration treatment before the cable enters the internal channel of the drying box 1, reducing the workload of subsequent drying and improving the overall drying efficiency. At the same time, the deformable fit design of the rubber ring 8 can adapt to cables of different diameters, ensuring that water droplets can be effectively scraped off during the processing of cables of various specifications, enhancing the applicability and stability of the device. In addition, the opening position and shape of the water trough 81 are designed to ensure good water scraping effect, while its soft material will not damage the cable surface, ensuring the quality and safety of the cable.

[0034] A friction ring 9 is fixed to the inner wall of the rubber ring 8; the friction ring 9 is made of sponge material; when the cross-linked polyethylene insulated power cable passes through the rubber ring 8, the friction ring 9 on the inner wall of the rubber ring 8 adheres to the surface of the cable and wipes it, absorbing the water removed by the water scraper groove 81 on the cable, further reducing the residual moisture on the cable surface. The sponge material friction ring 9 has good water absorption and can quickly absorb water when the cable passes through, making the cable surface drier. At the same time, the soft texture of the friction ring 9 will not cause any damage to the cable surface, ensuring the quality of the cable. This design provides a more detailed preliminary drying treatment before the cable enters the internal channel of the drying box 1, effectively reducing the burden of subsequent air drying and improving the overall drying efficiency. Furthermore, due to the material characteristics of the friction ring 9, it can adapt to cables of different diameters. Regardless of the cable thickness, it can closely adhere to the cable surface for wiping, enhancing the applicability and stability of the device, enabling the device to better meet the rapid drying needs of cross-linked polyethylene insulated power cables of different specifications.

[0035] like Figure 1 , Figures 6 to 8 , Figure 10 As shown, the drying box 1 has multiple ventilation holes 91 at the end away from the three-jaw chuck 11; the ventilation holes 91 are connected to multiple sponge blocks 52; when air blows from the multiple air holes 14 to quickly dry the cable surface, the air passes through the internal channel of the drying box 1 to the circulation box 15. Some of the air can pass through the multiple sponge blocks 52 to dry them, and then be discharged through the multiple ventilation holes 91. Other air can be circulated by the circulation box 15 and discharged with the cable. The design of multiple ventilation holes 91 allows the air inside the device to be discharged in an orderly manner, avoiding the accumulation and disorder of air, and ensuring the smooth air circulation inside the device. This design not only improves the drying efficiency of the device, but also reduces the noise that may be generated due to air accumulation, and improves the overall performance of the device. At the same time, the connection between the ventilation holes 91 and the sponge blocks 52 allows the sponge blocks 52 to be fully dried before being discharged, further ensuring the drying effect of the sponge blocks 52, thereby improving the wiping quality of the cable surface.

[0036] Working process: When rapidly drying the outer sheath of cross-linked polyethylene insulated power cables, the drying box 1 serves as the main structure of the rapid cable surface drying device. The cable is passed through the three-jaw chuck 11 and the center of the drying box 1. Two traction devices are connected to both ends of the cable for traction. When the cable is pulled to the three-jaw chuck 11, the water droplets on the cable surface are first removed. A small amount of water remains on the cable surface. The cable is pulled inside the drying box 1. An external fan connected to the air blowing assembly blows air into the drying box 1. The air is guided through the air blowing assembly to multiple air holes 14 and blown onto the cable surface to dry the water. The air circulates inside the drying box 1 until it reaches the circulating... Partial air is collected at ring box 15 through the air guide groove, which is an arc-shaped groove that can return the air. The air then enters the air duct 16 and returns to the blowing assembly for circulation. The portion of the cable surface to be dried is pulled out, achieving rapid drying of the cross-linked polyethylene insulated power cable surface based on air circulation. Simultaneously, when rapidly drying the outer sheath surface of cross-linked polyethylene insulated power cables of different diameters, the sliding of the three jaws of the three-jaw chuck 11 is adaptively adjusted according to the cable diameter to be dried. The characteristic of the three-jaw chuck 11 is that when one jaw is adjusted, all three jaws can be adjusted synchronously. Therefore, the connecting plate 12 and the filling block 13 connected to the three jaws slide synchronously closer or... When the cable diameter is small, the three claws of the three-jaw chuck 11 slide closer together, causing the three filler blocks 13 to partially block the internal channel of the drying box 1, thus reducing the space inside the drying box 1. When the cable diameter is large, the three claws of the three-jaw chuck 11 slide further apart, causing the three filler blocks 13 to slide into the inner wall of the drying box 1, opening up the blocked area inside the drying box 1, thus increasing the space inside the drying box 1. When blowing air into the internal channel of the drying box 1 to dry the surface of the outer sheath of the cross-linked polyethylene insulated power cable, multiple diversion pipes 21 are installed on each filler block 13, and air guide boxes 2 are connected to the multiple diversion pipes 21. The air guide boxes 2 are connected to an external fan. The external fan blows air into the air guide box 2, which, together with multiple diverter pipes 21, disperses the air into the filling block 13. Then, multiple air holes 14 blow the air onto the cable surface inside the drying box 1 for drying. The design of multiple diverter pipes 21 ensures that the air is evenly distributed, avoiding situations where the local air force is too strong or too weak, thus ensuring that the cable surface is blown by a uniform and appropriate air force, improving the drying effect. At the same time, the connection design between the air guide box 2 and the air duct 16 allows the air to return smoothly to the air guide box 2 through the air duct 16 after drying the cable surface, forming a circulation of air force, which saves energy and improves the overall efficiency of the device. When the three filling blocks 13 slide and adjust the internal channel space of the drying box 1 along with the three connecting plates 12, the three flexible blocks 3 connect the three filling blocks 13. The three flexible blocks 3 can deform and assist in sealing the internal channel of the drying box 1 as the three filling blocks 13 are adjusted. The flexible plate 31 is fixed on the flexible blocks 3 to guide the air blown by the air holes 14. The arc design of the multiple air holes 14 facing the flexible plate 31 allows the air to be guided along the arc surface when it is blown out, which further enhances the air gathering effect and ensures that the air can be blown more concentratedly and evenly onto the cable surface. This design not only improves the air utilization rate and reduces the air loss, but also makes the air force on the cable surface more uniform, thereby effectively improving the drying efficiency. At the same time, the deformation-assisted sealing function of the flexible blocks 3 allows the device to adjust the internal space more flexibly when adapting to cables of different diameters. The channel space ensures that the airflow is always kept in the optimal state, further enhancing the applicability and stability of the device. When multiple inclined air holes 14 blow air into the internal channel of the drying box 1, the air blows towards the end of the drying box 1 away from the three-jaw chuck 11. With the guidance of multiple inclined guide strips 4 located on the arc surface of the flexible plate 31, the air can form a cyclone inside the drying box 1. This cyclone design can further enhance the contact effect between the air and the cable surface, allowing the air to wrap around the cable in all directions. This not only increases the blowing force of the air on the cable surface moisture, but also effectively removes the residual moisture on the cable surface, achieving rapid drying. At the same time, the inclined air holes 14 and the guide strips 4 work together to make the airflow more orderly, avoiding air turbulence and backflow, reducing energy loss, and further improving the drying efficiency and energy utilization rate of the device. After the cross-linked polyethylene insulated power cable passes through the three-jaw chuck 11 into the internal channel of the drying box 1, the cable passes through four sponge blocks 52 located inside the drying box 1. The four sponge blocks 52 conform to the deformation of the cable surface. Two sponge blocks 52 are arranged opposite each other as a group, and the two groups of sponge blocks 52 are arranged alternately. As the cable is dried by air blowing inside the drying box 1, when the cable passes through the two groups of sponge blocks 52, the two electric sliders 5 drive the two connecting brackets 51 to slide respectively. The four sponge blocks 52 slide back and forth to wipe the surface of the cable. The conforming design of the four sponge blocks 52 can closely follow the cable. The contours of the cable surface effectively remove residual moisture and impurities, further improving the dryness and cleanliness of the cable surface. Furthermore, the cross-arrangement of the two sets of sponge blocks 52 not only enhances the comprehensiveness of the wiping but also avoids missed areas during the wiping process, ensuring that the cable surface receives uniform drying. This design not only improves the drying efficiency of the device but also enhances its adaptability and stability, enabling the device to be widely used in the rapid drying of cross-linked polyethylene insulated power cables of different specifications. Simultaneously, the four sponge blocks 52 slide back and forth inside the drying chamber 1, and... A space exists between the sponge block 52 and the drying box 1. The air flowing inside the drying box 1 can pass through this space to dry the areas of the sponge block 52 that are not in contact with the cable, thus achieving the drying process of the sponge block 52 and improving the wiping effect on the cable surface. When the cross-linked polyethylene insulated power cable passes through the four sponge blocks 52, an inclined surface is provided at one end of the sponge block 52 near the three-jaw chuck 11. This inclined surface guides the cable to pass through quickly and reduces resistance during cable insertion and friction during cable pulling. Multiple air guide channels 6 are provided on the sponge block 52 to guide the airflow, allowing the sponge block 52 to fully... The design of multiple air guide slots 6 allows air to pass evenly through all parts of the sponge block 52, ensuring that the sponge block 52 is fully dried while wiping the cable surface, avoiding the wiping effect being affected by moisture. This design not only improves the service life of the sponge block 52, but also ensures the continuous high efficiency of wiping the cable surface. In addition, the combination of the inclined surface and multiple air guide slots 6 allows the air to form a certain airflow direction when passing through the sponge block 52, enhancing the air flow and drying effect, making the entire device more efficient and stable in the process of drying the cable surface. When air is blown into the internal channels of the drying box 1 to dry the cable, the electric heater 7, fixed on the air guide box 2, generates heat. Multiple metal conductive rods 71 ​​absorb the heat and conduct it into the interior of the air guide box 2. The air is heated as it flows through the air guide box 2, turning the air blown into the internal channels of the drying box 1 into hot air. The hot air can evaporate the moisture on the surface of the cable and the sponge block 52 more quickly, significantly improving the drying speed. This design utilizes the principle of hot air drying, further enhancing the drying effect while maintaining air circulation. At the same time, the choice of metal material for the conductive rods 71 ​​ensures efficient heat conduction performance, allowing heat to be quickly and evenly transferred into the air. This avoids problems such as localized overheating and uneven drying. During the air circulation process in the air duct 16 to the air box 2, the three No. 1 air ducts 72 respectively guide the circulating air to the annular plate 73. Hot air is blown obliquely from multiple No. 1 inclined air holes 74 onto the surface of the pulled cable. A drying space is left between the inner wall of the annular plate 73 and the cable, which allows the multiple No. 1 inclined air holes 74 to blow air to assist in drying the cable surface. Some of the air entering the annular plate 73 is blown obliquely out from multiple No. 2 inclined air holes 75. The air blows to the two sponge blocks 52 at the front end that first wipe the cable surface, which can accelerate the drying of the surface of the two sponge blocks 52 and ensure the wiping effect of the two sponge blocks 52 on the cable. Before the cross-linked polyethylene insulated power cable passes through the three-jaw chuck 11, the cable is first passed through the sealing plate 86 and the fixed air box 83. A space exists between the fixed air box 83, the sealing plate 86, and the cable. Part of the air circulating in the air duct 16 can be sent to the fixed air box 83 through the second air guide duct 82. For cables whose surfaces are not easily covered by water droplets, the sealing plate 86 is slid away from the multiple water-blowing holes 84. At this time, the multiple water-blowing holes 84 are open, and the two water-blowing channels 85 are closed. The air from the multiple water-blowing holes 84 initially dries the surface of the pulled cable. For cables whose surfaces are easily covered by water droplets, the sealing plate 86 is slid to block the multiple water-blowing holes 84. At this time, the two water-blowing channels 85... The two water-blowing troughs 85 are in the open state. They are connected to three secondary air ducts 82 via a fixed air box 83. The airflow from the two water-blowing troughs 85 initially dries the upper and lower surfaces of the pulled cable. Water droplets easily accumulate on the upper and lower surfaces of the cable, and the concentrated airflow easily blows them off, improving the subsequent drying effect on the cable surface. When the cross-linked polyethylene insulated power cable passes through the three-jaw chuck 11, the cable is aligned with the center of the rubber ring 8 and inserted. The rubber ring 8 can deform to conform to the cable's contour, allowing the water-scraping trough 81 to scrape away water droplets on the cable during traction, reducing the moisture content on the cable surface. This initial dehydration treatment is performed before the cable enters the internal channel of the drying box 1, reducing water loss. This reduces the workload of subsequent drying and improves overall drying efficiency. Simultaneously, the deformable fit design of the rubber ring 8 adapts to cables of different diameters, ensuring effective removal of water droplets during the processing of cables of various specifications, enhancing the applicability and stability of the device. Furthermore, the design of the location and shape of the water-scraping groove 81 ensures good water-scraping effect while its soft material does not damage the cable surface, guaranteeing cable quality and safety. When the cross-linked polyethylene insulated power cable passes through the rubber ring 8, the friction ring 9 on the inner wall of the rubber ring 8 adheres to the cable surface, wiping and absorbing the water scraped off by the water-scraping groove 81, further reducing residual moisture on the cable surface. The friction of the sponge material... The friction ring 9 has excellent water absorption properties, which can quickly absorb moisture when the cable passes through, making the cable surface drier. At the same time, the soft texture of the friction ring 9 will not cause any damage to the cable surface, ensuring the quality of the cable. This design provides a more detailed preliminary drying treatment before the cable enters the internal channel of the drying box 1, effectively reducing the burden of subsequent air drying and improving the overall drying efficiency. Furthermore, due to the material properties of the friction ring 9, it can adapt to cables of different diameters. Regardless of the cable thickness, it can closely adhere to the cable surface for wiping, enhancing the applicability and stability of the device. This allows the device to better meet the rapid drying needs of cross-linked polyethylene insulated power cables of different specifications. When air blows from multiple air holes 14 to quickly dry the cable surface, the air passes through the internal channels of the drying box 1 to the circulation box 15. Some of the air passes through multiple sponge blocks 52 to dry the cable, and then is discharged through multiple vent holes 91. Other air is circulated by the circulation box 15 and discharged with the cable. The design of multiple vent holes 91 allows the air inside the device to be discharged in an orderly manner, avoiding air accumulation and turbulence, and ensuring smooth airflow inside the device. This design not only improves the drying efficiency of the device, but also reduces the noise that may be generated due to air accumulation, thus improving the overall performance of the device. At the same time, the connection between the vent holes 91 and the sponge blocks 52 allows the air to be fully dried before being discharged, further ensuring the drying effect of the sponge blocks 52, thereby improving the wiping quality of the cable surface.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid cable surface drying device based on wind circulation, characterized in that: The device includes a drying box; a three-jaw chuck is fixedly connected to one end of the drying box; a connecting plate is fixedly connected to each of the three jaws of the three-jaw chuck; a filling block is fixedly connected to the connecting plate; multiple air holes are provided on the filling block; a blowing assembly is provided on the filling block, and an external fan is connected to the blowing assembly, which is used to blow air into the interior of the drying box to dry the surface of cross-linked polyethylene insulated power cables; a circulation box is fixedly connected to the end of the drying box away from the three-jaw chuck, and an air guide groove is provided at the end of the circulation box near the three-jaw chuck, and the circulation box is connected to the interior of the drying box; multiple air ducts are fixedly connected between the circulation box and the blowing assembly.

2. The cable surface rapid drying device based on wind circulation according to claim 1, characterized in that: The blower assembly includes an air guide box and a distribution pipe; multiple air guide boxes are fixedly connected to the drying box, and the circulation box can be connected to the air guide box through an air duct; multiple distribution pipes are fixedly connected between the filling block and the air guide box.

3. The cable surface rapid drying device based on wind circulation according to claim 2, characterized in that: A flexible block is fixed between the two filling blocks; a flexible plate is fixed to the flexible block, and the side of the flexible plate away from the flexible block is set as an arc surface, with multiple air holes facing the arc surface of the flexible plate.

4. The cable surface rapid drying device based on wind circulation according to claim 3, characterized in that: The multiple air vents are opened at an angle; multiple guide strips are fixed to the arc surface of the flexible plate, and the multiple guide strips are set at an angle.

5. A cable surface rapid drying device based on wind circulation according to claim 2, characterized in that: The drying box has two electric sliders slidably connected inside; one end of each electric slider is fixed to a connecting frame, and the cross-sectional shape of the connecting frame is U-shaped; two sponge blocks are fixed to the connecting frame.

6. A cable surface rapid drying device based on wind circulation according to claim 5, characterized in that: The sponge block has an inclined surface at one end near the three-jaw chuck; the sponge block has multiple air guide grooves.

7. A cable surface rapid drying device based on wind circulation according to claim 5, characterized in that: A heater is fixedly connected to each of the multiple air guide boxes; multiple conductive rods are fixedly connected to each of the air guide boxes, and the multiple conductive rods are located inside the air guide boxes; a first air guide pipe is fixedly connected to each of the three air ducts; an annular plate is fixedly connected to each of the three first air guide pipes, and the annular plate is located inside the drying box; multiple first oblique air holes are opened on the inner wall of the annular plate; multiple second oblique air holes are opened on the annular plate facing the sponge block.

8. A cable surface rapid drying device based on wind circulation according to claim 1, characterized in that: Rubber rings are fixed to the three jaws of the three-jaw chuck; a scraper groove is formed on the inner wall of the rubber ring; a second air guide pipe is fixed to the end of the multiple air ducts away from the circulation box; a fixed air box is fixed to the three second air guide pipes; a multiple inclined water blowing holes are formed on the inner wall of the fixed air box; two opposing water blowing grooves are formed on the fixed air box; a sealing plate is slidably connected to the inner wall of the fixed air box; two corresponding grooves are formed on the sealing plate, and the corresponding grooves correspond to the water blowing grooves.

9. A cable surface rapid drying device based on wind circulation according to claim 8, characterized in that: A friction ring is fixed to the inner wall of the rubber ring; the friction ring is made of sponge material.

10. A cable surface rapid drying device based on wind circulation according to claim 5, characterized in that: The drying box has multiple ventilation holes at the end away from the three-jaw chuck; the ventilation holes are connected to multiple sponge blocks.

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