An irradiation cross-linking cable and an irradiation cross-linking device thereof

Abstract

The application belongs to the technical field of power cable and irradiation crosslinking equipment, and particularly relates to an irradiation crosslinked cable and an irradiation crosslinking device thereof. The cable comprises the following structure layers from outside to inside: a wear-resistant layer, a mica strip, an insulating heat-conducting layer and a buffer layer, a filling layer, a heat-dissipation reinforcing rib and a compression-resistant layer, an insulating protective layer and a cable core. The application is configured in a synergistic manner through a polyurethane wear-resistant layer, a synthetic fluorine mica tape covering a fireproof layer, an alternating distribution structure of heat-conducting insulating material and foaming buffer material, a polyisobutylene non-migration type water-blocking filling, a heat-conducting reinforcing rib and aramid / carbon fiber compression-resistant layer composite design, and an ethylene-propylene rubber or silicone rubber insulating protective layer, so that the cable significantly improves the scratch resistance, fire resistance, high-efficiency heat dissipation, impact resistance, longitudinal water resistance, structural compression resistance and long-term operation reliability under the premise of maintaining excellent electrical insulation, and realizes integrated integration of multiple protection performances.

Description

Technical Field

[0001] This application belongs to the technical field of power cables and irradiation crosslinking equipment, specifically relating to an irradiation crosslinking cable and an irradiation crosslinking device thereof. Background Technology

[0002] Irradiated cross-linked cables refer to cables in which cross-linked materials are used in parts. The most commonly used material is cross-linked polyethylene. Cross-linked cables are suitable for low-voltage wires and cables of 0.6 / 1kV and below. They are more resistant to high temperatures, more wear-resistant, have a longer lifespan, and are safer than ordinary cables.

[0003] In the process of developing this application, the applicant discovered at least the following shortcomings in the relevant technology: Existing irradiated cross-linked cables still have certain performance shortcomings in terms of high temperature resistance and wear resistance, making it difficult to meet comprehensive operational requirements. Summary of the Invention

[0004] Based on the above-mentioned technical problems, this application provides an irradiated cross-linked cable and an irradiated cross-linking device thereof, which aims to at least partially solve the technical problem of difficulty in meeting comprehensive operational requirements.

[0005] In a first aspect, this application provides an irradiated cross-linked cable, characterized in that the cable comprises, from the outside to the inside, the following structural layers: A wear-resistant layer, wherein the wear-resistant layer is composed of a polyurethane elastomer material; a The mica strip layer is formed by continuously wrapping synthetic fluorine-gold mica tape around the circumference in an overlapping and wrapping manner. An insulating and thermally conductive layer and a buffer layer are provided. The insulating and thermally conductive layer is made of thermally conductive ceramic filled with silicone rubber or graphene-modified thermally conductive plastic, and the buffer layer is made of cross-linked polyolefin foam or thermoplastic polyurethane foam material. The insulating and thermally conductive layer and the buffer layer are distributed alternately. The filler layer is composed of polyisobutylene-based non-migratory water-blocking paste or water-blocking yarn; The heat dissipation reinforcing ribs and the pressure-resistant layer are provided. The heat dissipation reinforcing ribs are made of thermally conductive silicone rubber or flexible graphite strips, and the pressure-resistant layer is made of aramid fiber wrapping tape or carbon fiber braided layer. The heat dissipation reinforcing ribs are disposed between multiple layers of the pressure-resistant layer and are covered by a filling layer. An insulating protective layer, which is made of ethylene propylene rubber or silicone rubber and is extruded onto the outside of the cable core; The cable core is made of stranded copper or aluminum conductors.

[0006] In a second aspect, this application provides an irradiation crosslinking apparatus for irradiating crosslinked cables, comprising: a rotating irradiation mechanism and a pulling mechanism. The rotating irradiation mechanism includes a housing, a rotating chamber, and an electron accelerator. The rotating chamber is disposed within the housing and rotatably connected to the housing. At least one electron accelerator is connected to the rotating chamber. The cable passes through the axis of the rotating chamber. The pulling mechanism includes: a pulling member and a retracting member, respectively disposed on both sides of the housing along the cable travel direction. The retracting member is configured to drive the cable to move at a constant speed along the travel direction. The pulling member is configured to apply a periodic directional pulling force to the cable. In some embodiments, the rotating irradiation mechanism further includes a first bearing, a drive element, and a passageway. The first bearing is rotatably connected between the rotating chamber and the outer shell. The drive element is used to drive the rotating chamber to rotate. The outer shell has passageways on both sides, and the passageways of the outer shell are located at the axis of the rotating chamber.

[0007] In some embodiments, the pulling mechanism further includes a take-up roller, a limiting member, and a take-up member, wherein the take-up roller is connected to the housing and located on the same side as the pulling member, and the limiting member is connected to the housing and located between the take-up roller and the pulling member.

[0008] In some implementations, the pulling member includes a connecting plate, a first limiting wheel, an elastic element, and a friction element. The connecting plate is connected to the housing, the elastic element is connected to the connecting plate, the first limiting wheel is connected to the elastic element, and the friction element is connected to the connecting plate.

[0009] In some embodiments, the elastic element includes a vertical plate, a first slider, a first spring, and a bolt. The vertical plate is connected to the connecting plate, the first slider is slidably connected to the vertical plate, the bolt is threaded onto the vertical plate, and a first spring is connected between the bolt and the first slider. The friction element includes a second motor, a disc, and a friction rope. The second motor is connected to the connecting plate, the disc is rotatably connected to the second motor, and the friction rope is connected to the disc.

[0010] In some embodiments, the limiting member includes a horizontal plate and a second limiting wheel, the horizontal plate being connected to the connecting plate and the second limiting wheel being rotatably connected to the horizontal plate.

[0011] In some embodiments, the irradiation crosslinking device further includes a friction mechanism; The friction mechanism includes an actuating component, a movable component, and a pressing component. The actuating component is connected to the rotary chamber, the movable component is connected to the outer casing, the movable component has a movable part, and the pressing component is connected to the movable part of the movable component. The pressing component periodically presses against the cable.

[0012] In some embodiments, the actuating element includes a guide rod and a second bracket, the guide rod being connected to the second bracket and connected to the rotary chamber via the second bracket.

[0013] In some embodiments, the pressing member includes a second bearing, a ramp, a second spring, and a pressing rod. The ramp is rotatably connected to the movable part of the movable member via the second bearing. A second spring connects the ramp and the movable part of the movable member. The pressing rod is connected to the ramp.

[0014] This application provides a radiation cross-linked cable and a radiation cross-linking device thereof, which relates to cross-linked polyethylene insulated power cable and cable manufacturing equipment technology, specifically for cables classified by shape; By employing a polyurethane wear-resistant layer, a synthetic fluorophlogopite tape covering and wrapping fireproof layer, an alternating distribution structure of thermally conductive insulating materials and foamed buffer materials, a polyisobutylene-based non-migratory water-blocking filler, a composite design of thermally conductive reinforcing ribs and aramid / carbon fiber compression-resistant layers, and a synergistic configuration of ethylene propylene rubber or silicone rubber insulation protective layers, the cable significantly improves scratch resistance, fire resistance, efficient heat dissipation, impact resistance, longitudinal water blocking, structural compression resistance, and long-term operational reliability while maintaining excellent electrical insulation, achieving integrated multi-protection performance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A cross-sectional schematic diagram of the cable is shown; Figure 2 It shows Figure 1 A partial schematic diagram; Figure 3 A schematic diagram of the structure of an irradiated cross-linked cable and an irradiated cross-linking device according to one or more embodiments of this application is shown; Figure 4 It shows Figure 3 A schematic diagram of the outer shell without the side panels; Figure 5 It shows Figure 1A schematic diagram of the tensioning mechanism in the diagram; Figure 6 It shows Figure 5 A schematic diagram of the tensioning component in the diagram; Figure 7 It shows Figure 6 A schematic diagram of the elastic element in the diagram; Figure 8 It shows Figure 6 A schematic diagram of the friction components in the diagram; Figure 9 It shows Figure 5 A schematic diagram of the limiting component in the middle; Figure 10 It shows Figure 5 A schematic diagram of the structure of the collecting roller in the middle; Figure 11 It shows Figure 5 A schematic diagram of the structure of the package being collected; Figure 12 It shows Figure 11 Another perspective illustration; Figure 13 It shows Figure 4 A schematic diagram of the drive component in the process; Figure 14 It shows Figure 3 Another perspective illustration; Figure 15 It shows Figure 3 An assembly diagram of the outer shell, actuator, rotary chamber, moving parts, and pressing parts; Figure 16 It shows Figure 15 A schematic diagram of the actuator structure in the middle; Figure 17 It shows Figure 15 A schematic diagram of the structure of the moving parts in the diagram; Figure 18 It shows Figure 15 A schematic diagram of the lower pressure component.

[0017] Explanation of reference numerals in the attached figures: 10. Irradiation crosslinking device; 100. Rotating irradiation mechanism; 110. Outer shell; 120. Rotary chamber; 130. Electron accelerator; 140. First bearing; 150. Drive component; 151. First motor; 152. Belt; 153. Drive wheel; 154. First support; 160. Through port; 200. Pulling mechanism; 210. Gathering roller; 220. Limiting component; 221. Horizontal plate; 222. Second limiting wheel; 230. Pulling component; 231. Connecting plate; 232. First limiting wheel; 233. Elastic component; 2331. Vertical plate; 2332. First slider; 2333. First spring; 2334. Bolt; 234. Friction component; 2341. Second motor; 2342. Disc; 2343. Friction rope; 240. Gathering component; 241. Sliding rod; 242. Telescopic device; 243. Arc plate; 244. Base; 245. Rotating rod; 246. Uniform speed motor; 300. Friction mechanism; 310. Actuating component; 311. Guide rod; 312. Second bracket; 320. Moving component; 321. Third motor; 322. Slide rod; 323. Screw; 324. Second slider; 330. Pressing component; 331. Second bearing; 332. Inclined plate; 333. Second spring; 334. Pressing rod; d, cable; d1, filler layer; d2, wear-resistant layer; d3, mica strip; d4, insulating and heat-conducting layer; d5, buffer layer; d6, heat dissipation reinforcing rib; d7, compression-resistant layer; d8, insulating protective layer; d9, cable core. Detailed Implementation

[0018] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] A radiation cross-linked cable and its radiation cross-linking device in the related technology have at least the following problems when in use: Existing irradiated cross-linked cables have shortcomings in terms of wear resistance, fire resistance, thermal conductivity, buffering, water resistance, pressure resistance, and heat dissipation, making it difficult to meet comprehensive operational requirements.

[0020] Uneven irradiation is a common problem in irradiation crosslinking processes. When using a fixed electron accelerator to irradiate moving cables, the cables travel in only one direction and do not rotate or maintain a fixed posture, which can easily lead to uneven irradiation doses received around the cable's circumference. This can result in irradiation blind spots or weak areas, affecting the uniformity of the crosslinking degree and potentially compromising the consistency and long-term stability of the cable's insulation performance.

[0021] Most devices can only achieve straight-line passage of cables and fixed-angle irradiation, making it difficult to dynamically and effectively change the relative angle between the cable surface and the irradiation source during the irradiation process. This limits the ability to fully and three-dimensionally irradiate cables from multiple angles, thus restricting the optimization and efficiency improvement of the irradiation crosslinking process.

[0022] Traditional processes typically only provide a constant traction force, and cannot help change the spatial position and shape of the cable in the irradiation field by periodically and controllably changing the tension state of the cable in the irradiation area, such as alternating between tautness and relaxation, thereby optimizing the irradiation uniformity.

[0023] Figure 1 A schematic cross-sectional view of cable d is shown. Figure 2 It shows Figure 1 A partial schematic diagram shows a radiation cross-linked cable provided in this application. The cable d includes the following structural layers from the outside to the inside: Wear-resistant layer d2 is composed of polyurethane elastomer material; Mica strip layer d3 is composed of synthetic fluorinated gold mica strips continuously wrapped around the circumference in an overlapping and wrapping manner. The insulating and thermally conductive layer d4 and the buffer layer d5 are provided. The insulating and thermally conductive layer d4 is made of thermally conductive ceramic filled with silicone rubber or graphene-modified thermally conductive plastic, and the buffer layer d5 is made of cross-linked polyolefin foam or thermoplastic polyurethane foam material. The insulating and thermally conductive layer d4 and the buffer layer d5 are distributed alternately. The filler layer d1 is composed of polyisobutylene-based non-migratory water-blocking paste or water-blocking yarn; The heat dissipation reinforcing rib d6 and the pressure-resistant layer d7 are provided. The heat dissipation reinforcing rib d6 is made of thermally conductive silicone rubber or flexible graphite strips, and the pressure-resistant layer d7 is made of aramid fiber wrapping tape or carbon fiber braided layer. The heat dissipation reinforcing rib d6 is disposed between multiple layers of pressure-resistant layer d7 and is covered by filler layer d1. Insulation protective layer d8 is made of ethylene propylene rubber or silicone rubber and is extruded onto the outside of cable core d9. Cable core d9 is made of copper or aluminum conductors stranded together.

[0024] Figure 3 A schematic diagram of the structure of an irradiated cross-linked cable and its irradiated cross-linking device 10 according to one or more embodiments of this application is shown. Figure 4 It shows Figure 3 A schematic diagram of the outer casing 110 without the side panels. Figure 5 It shows Figure 1The schematic diagram of the pulling mechanism 200 in this application shows an irradiation crosslinking device 10 for irradiating crosslinked cables, used for irradiating crosslinked cables d. It includes a rotating irradiation mechanism 100 and a pulling mechanism 200. The rotating irradiation mechanism 100 includes a housing 110, a rotating chamber 120, and an electron accelerator 130. The rotating chamber 120 is disposed within the housing 110 and rotatably connected to the housing 110. At least one electron accelerator 130 is connected to the rotating chamber 120. The cable d passes through the axis of the rotating chamber 120. The pulling mechanism 200 includes a pulling member 230 and a retracting member 240, respectively disposed on both sides of the housing 110 along the travel direction of the cable d. The retracting member 240 is configured to drive the cable d to move at a constant speed along the travel direction. The pulling member 230 is configured to apply a periodic directional pulling force to the cable d.

[0025] In use, the irradiation crosslinking device 10 of this application has a rotating irradiation mechanism 100 positioned as required, and a support leg at the bottom of the outer casing 110 for ground support. Alternatively, other methods can be used to fix the outer casing 110 to the ground to increase stability. The rotating chamber 120 drives the electron accelerator 130 to rotate. During rotation, the electron accelerator 130 irradiates and crosslinks the cable d, thereby increasing its irradiation area. The irradiation area varies depending on the number of electron accelerators 130 used, and this application does not impose any limitations on this. The receiving member 240 pulls the cable d at a uniform speed, providing force for the cable d to pass through the rotating chamber 120. The cable d moves towards the receiving member... The cable d is pulled by the receiving element 240. Specifically, the pulling force of the receiving element 240 is adjusted at different speeds according to the irradiation difficulty of the cable d. For example, some cables d are difficult to irradiate, so the pulling speed of the receiving element 240 is reduced. The pulling element 230 pulls the cable d. Every once in a while, the pulling element 230 pulls the cable d in the opposite direction along its direction of travel. At this time, the cable d is in a taut state. Therefore, in conjunction with the rotating electron accelerator 130, the cable d can be irradiated evenly in a complete circle. After another once in a while, the pulling element 230 pulls the cable d in the same direction along its direction of travel. At this time, the cable d is in a relaxed state, increasing the area of ​​the cable d in the rotating chamber 120 and changing the irradiation angle of the electron accelerator 130 on the cable d, so that the cable d can be irradiated and crosslinked from more angles. The specific details of the irradiated crosslinked cable and the irradiated crosslinking device 10 provided in this application are now further described with reference to the accompanying drawings.

[0026] In the above embodiments, for the interval reversal time of the pulling member 230, for example, the interval reversal time of the pulling member 230 can be once every ten seconds, the electron beam energy of the electron accelerator 130 can be selected in the range of 0.5MeV-2.0MeV, and the beam current intensity can be 1mA-10mA. The traveling speed of the cable d can be adjusted in the range of 1m / min-10m / min as needed based on the thickness of the irradiated cross-linked structural layer and the target absorbed dose.

[0027] Combination Figure 3 , Figure 4 as well as Figure 5 In some embodiments, the rotating irradiation mechanism 100 further includes a first bearing 140, a drive member 150, and a passage 160. The first bearing 140 is rotatably connected between the rotating chamber 120 and the outer casing 110. The drive member 150 is used to drive the rotating chamber 120 to rotate. The outer casing 110 has passages 160 on both sides, and the passage 160 of the outer casing 110 is located at the axis of the rotating chamber 120. In use, the drive member 150 starts to drive the rotating chamber 120 to rotate. The connection of the rotating chamber 120 is ensured by the installation of the first bearing 140. The passage 160 is used to insert the cable d. A control device can be set on the outer casing 110 to control the operation of each device. A fixed operating program can also be set so that each device runs according to the process.

[0028] Combination Figure 5 as well as Figure 3 As shown, in some embodiments, the pulling mechanism 200 further includes a take-up roller 210, a limiting member 220, and a take-up member 240. The take-up roller 210 is connected to the housing 110 and is located on the same side as the pulling member 230. The limiting member 220 is connected to the housing 110 and is located between the take-up roller 210 and the pulling member 230. The cable d is first taken up in the take-up roller 210, then passes through the limiting member 220 and the pulling member 230, and enters the rotary chamber 120 through the port 160. Then, the electron accelerator 130 irradiates and crosslinks the cable. Finally, the cable d comes out through the port 160 on the other side of the housing 110 and is taken up by the take-up member 240. The limiting member 220 plays a guiding role for the cable d.

[0029] Figure 6 It shows Figure 5 The structural diagram of the tension member 230 in the middle, combined with Figure 6 as well as Figure 5In some embodiments, the pulling member 230 includes a connecting plate 231, a first limiting wheel 232, an elastic member 233, and a friction member 234. The connecting plate 231 is connected to the housing 110, the elastic member 233 is connected to the connecting plate 231, the first limiting wheel 232 is connected to the elastic member 233, and the friction member 234 is connected to the connecting plate 231. During use, the elastic member 233 applies elasticity to the first limiting wheel 232, thereby causing the first limiting wheel 232 to adhere to the cable d. Then, the friction member 234 can rotate and rub against the cable d. In the above embodiment, for the periodic reversal control of the tension member 230: the second motor 2341 can be driven by a control device configured to periodically control the second motor 2341 to rotate in the forward direction and in the reverse direction, for example, driving in the forward direction for 10 seconds and then driving in the reverse direction for 10 seconds, and so on.

[0030] Figure 7 It shows Figure 6 The structural diagram of the elastic element 233 in the diagram is combined with... Figure 6 as well as Figure 7 In some embodiments, the elastic element 233 includes a vertical plate 2331, a first slider 2332, a first spring 2333, and a bolt 2334. The vertical plate 2331 is connected to the connecting plate 231, the first slider 2332 is slidably connected to the vertical plate 2331, and the bolt 2334 is threadedly connected to the vertical plate 2331. The first spring 2333 is connected between the bolt 2334 and the first slider 2332. The first slider 2332 is located on the vertical plate 2331 and can be slidably connected to change the position of the first limiting wheel 232. The elasticity of the first spring 2333 is set to provide elastic compressive force to the first slider 2332. The rotation of the bolt 2334 changes its own position and also changes the elastic force on the first slider 2332. For example, the friction rope 2343 can be made of wear-resistant rubber and fixed in the circumferential groove of the disc 2342 by winding. The first spring 2333 can provide a preload force of 5N-20N, which can be set by adjusting the bolt 2334.

[0031] Figure 8 It shows Figure 6 The structural diagram of friction component 234 in the diagram, combined with Figure 8 as well as Figure 6As shown, in some embodiments, the friction element 234 includes a second motor 2341, a disc 2342, and a friction rope 2343. The second motor 2341 is connected to the connecting plate 231, the disc 2342 is rotatably connected to the second motor 2341, and the friction rope 2343 is connected to the disc 2342. When the second motor 2341 is energized, it drives the disc 2342 to rotate. The friction rope 2343 is disposed on the disc 2342 and rubs against the cable d, causing it to move. In this case, to adjust the bolts 2334 of the cable d of different sizes, the squeezing force of the first spring 2333 on the first slider 2332 is changed to maintain the contact of the second limit wheel 222 with the cable d, thereby causing the cable d to be passively squeezed and attached to the disc 2342. Then, the second motor 2341 drives the disc 2342 to rotate, thereby driving the movement of the cable d through friction.

[0032] Figure 9 It shows Figure 5 The structural diagram of the limiting member 220 in the middle, combined with Figure 5 as well as Figure 9 In some embodiments, the limiting member 220 includes a horizontal plate 221 and a second limiting wheel 222. The horizontal plate 221 is connected to the connecting plate 231, and the second limiting wheel 222 is rotatably connected to the horizontal plate 221. The cable d passes between the two second limiting wheels 222, thereby limiting the movement angle of the cable d.

[0033] Figure 10 It shows Figure 5 A schematic diagram of the structure of the collecting roller 210 in the middle. Figure 10 The specific design of the take-up roller 210 is shown. The take-up roller 210 is used to take up the untreated cable d, which is then convenient for subsequent pulling out processing. Of course, this application does not limit the design of the take-up roller 210, and it can be replaced according to specific needs.

[0034] Figure 11 It shows Figure 5 A structural diagram of the receiving component 240 in the middle. Figure 12 It shows Figure 11 Another perspective illustration in the diagram, combined with Figure 5 as well as Figure 11 , Figure 12In some embodiments, the receiving component 240 includes a sliding rod 241, a telescopic device 242, an arc-shaped plate 243, a base 244, rotating rods 245, and a constant-speed motor 246. The base 244 is connected to the outer casing 110, the sliding rod 241 is connected to the base 244, the telescopic device 242 is connected to the sliding rod 241, the constant-speed motor 246 is connected to the sliding rod 241, four rotating rods 245 are movably connected to the constant-speed motor 246, and four arc-shaped plates 243 are movably connected to the rotating rods 245. The receiving component 240 adopts commercially available... In the existing device, the constant speed motor 246, when energized, can drive the arc plate 243 and the rotating rod 245 to rotate as a whole, thereby winding the cable d. The position can be changed up and down through the sliding rod 241. When the telescopic device 242 is energized, it will drive the sliding rod 241 to change position, thereby adapting to the position of the cable d at different heights. The arc plate 243 is divided into four pieces, which are respectively connected to four rotating rods 245. By rotating the rotating rods 245, the position of the arc plate 243 from its axis can be changed, thus changing the diameter of the circle formed by the arc plate 243.

[0035] Figure 13 It shows Figure 4 The structural diagram of the drive component 150 in the diagram, combined with Figure 4 as well as Figure 13 In some embodiments, the drive component 150 includes a first motor 151, a belt 152, a drive wheel 153, and a first bracket 154. The first motor 151 is connected to the housing 110, the first bracket 154 is connected to the drive wheel 153, and the drive wheel 153 is connected to the rotary chamber 120 through the first bracket 154. The belt 152 is sleeved on the shaft of the first motor 151 and the drive wheel 153. When the first motor 151 is powered on, it will drive the drive wheel 153 to rotate through the belt 152, thereby providing power for the rotation of the rotary chamber 120. The drive wheel 153 has a hole larger than the cable d for the cable d to pass through normally.

[0036] Figure 14 It shows Figure 3 Another perspective illustration, Figure 15 It shows Figure 3 The diagram shows the assembly of the outer shell 110, the actuating element 310, the rotating chamber 120, the movable element 320, and the pressing element 330. In some embodiments, the irradiation crosslinking device 10 also includes a friction mechanism 300. The friction mechanism 300 includes an actuating member 310, a movable member 320, and a pressing member 330. The actuating member 310 is connected inside the rotary chamber 120, and the movable member 320 is connected inside the outer casing 110. The movable member 320 has a movable portion, and the pressing member 330 is connected to the movable portion of the movable member 320. The pressing member 330 periodically presses against the cable d. The actuating member 310 rotates with the rotary chamber 120 and is tilted at the axis of the rotary chamber 120. Therefore, the actuating member 310 presses against the cable d, causing it to tilt during the friction process. The position of cable d being processed by electron accelerator 130 is changed. The movable part 320 intermittently squeezes cable d. It should be noted that when the movable part 320 drives the pressing part 330 to descend and squeeze cable d, the pulling part 230 is rotating in the direction of cable d's travel. Therefore, cable d is in a loose state at this time. Then, with the squeezing of the pressing part 330, cable d is brought closer to electron accelerator 130. Moreover, the angle between cable d and electron accelerator 130 will change at this time, so that different positions of cable d are processed by electron accelerator 130.

[0037] Figure 16 It shows Figure 15 The structural diagram of the actuator 310 in the diagram, combined with Figure 16 and Figure 15 In some embodiments, the actuator 310 includes a guide rod 311 and a second bracket 312. The guide rod 311 is connected to the second bracket 312 and is connected to the rotary chamber 120 via the second bracket 312. When the groove on the guide rod 311 rubs against the cable d, it causes the cable to change its angle relative to the electron accelerator 130. This application does not limit the shape of the guide rod 311; it can be inclined in the rotary chamber 120 and generate friction with the cable d. In specific use, the guide rod 311 can be modified according to specific needs. For example, the groove on the guide rod 311 can be arc-shaped, with a radius of curvature slightly larger than the radius of the cable d. During irradiation, the guide rod 311 and the pressure rod 334 are made of a rubber material with elastic surfaces. The second spring 333 is configured to provide limited elastic pressure, ensuring that the pressure rod 334 can only slightly change the local spatial position of the cable core without causing mechanical damage to its structure, such as the extruded structural layers. After the irradiation crosslinking process is completed, the slight contact marks that may exist on the surface of the cable core will not affect the subsequent coating and other processes or the performance of the final product.

[0038] Figure 17 It shows Figure 15 The structural diagram of the movable part 320 in the diagram, combined with Figure 15 as well as Figure 17In some embodiments, the movable component 320 includes a third motor 321, a slide bar 322, a screw 323, and a second slider 324. The third motor 321 drives the screw 323 to rotate. The second slider 324 is threadedly connected to the screw 323, so the threaded connection will cause the second slider 324 to change position. The slide bar 322 is also inserted into the second slider 324, which will limit the range of motion of the second slider 324. The second slider 324 is the movable part of the movable component 320, which will drive the pressing component 330 to move up and down. Figure 18 It shows Figure 15 The structural diagram of the pressing component 330 in the middle, combined with Figure 15 as well as Figure 18 In some embodiments, the pressing member 330 includes a second bearing 331, an inclined plate 332, a second spring 333, and a pressing rod 334. The inclined plate 332 is rotatably connected to the movable part of the movable member 320 via the second bearing 331. The second spring 333 is connected between the inclined plate 332 and the movable part of the movable member 320. The pressing rod 334 is connected to the inclined plate 332. The elastic setting of the second spring 333 serves as a buffer when the pressing rod 334 is squeezed against the cable d, reducing damage to the cable d.

[0039] Based on the technical solution of this application, the irradiation crosslinking device 10 of this application has at least the following effects: By employing a polyurethane wear-resistant layer, a synthetic fluorophlogopite tape covering and wrapping fireproof layer, an alternating distribution structure of thermally conductive insulating materials and foamed buffer materials, a polyisobutylene-based non-migratory water-blocking filler, a composite design of thermally conductive reinforcing ribs and aramid / carbon fiber compression-resistant layers, and a synergistic configuration of ethylene propylene rubber or silicone rubber insulation protective layers, the cable significantly improves scratch resistance, fire resistance, efficient heat dissipation, impact resistance, longitudinal water blocking, structural compression resistance, and long-term operational reliability while maintaining excellent electrical insulation, achieving integrated multi-protection performance.

[0040] The irradiation crosslinking device 10 of this application enables more uniform and efficient irradiation treatment of the cable d. This device rotates the electron accelerator 130 via the rotating chamber 120 in the rotating irradiation mechanism 100. Combined with the uniform traction of the collecting member 240 in the pulling mechanism 200 and the periodic directional pulling force applied by the pulling member 230, the cable d is periodically kept in a taut and relaxed state during irradiation. This continuously changes the relative position and angle between the cable and the electron accelerator, ensuring that all parts of the cable in the circumferential and axial directions are fully irradiated, effectively avoiding irradiation blind spots and improving crosslinking quality and efficiency.

[0041] The tensioning member 230, through the cooperation of the elastic member 233 and the friction member 234, can adapt to cables of different diameters d and provide a stable and reliable periodic directional friction force. Specifically, the preload of the first spring 2333 can be changed by adjusting the bolt 2334, thereby adjusting the pressure of the first limiting wheel 232 on the cable and ensuring that the disc 2342 and friction rope 2343 of the friction member 234 can effectively drive the cable. The second limiting wheel 222 of the limiting member 220 plays a good guiding and limiting role in the direction of cable travel.

[0042] The friction mechanism 300 further enhances the adequacy of irradiation. An actuator 310, located inside the rotating chamber 120, rotates with the chamber, and its inclined guide rod 311 periodically rubs and agitates the slack cable d. Simultaneously, the moving part 320 drives the pressing part 330 to periodically press down on the cable, causing more dimensional changes in the cable's spatial orientation within the irradiation area. This design, coordinated with the pulling mechanism 200, allows more parts of the cable d's surface to be exposed to the irradiation field of the electron accelerator 130 at better angles, achieving multi-angle, dead-angle-free irradiation crosslinking.

[0043] The rotating irradiation mechanism 100 achieves stable rotation of the rotating chamber 120 via the first bearing 140, and the drive component 150 provides smooth driving force through a motor, belt 152, and drive wheel 153. The take-up component 240 can be height-adjusted via the telescopic device 242, and the winding diameter formed by the arc plate 243 can be adjusted via the rotating rod 245 to adapt to the processing requirements of cables of different specifications. The overall device structure is reasonably designed, the various mechanisms work smoothly together, and the degree of automation is high.

[0044] S1 Preparation and Launch Phase The cable end d to be processed is passed sequentially between the take-up roller 210, the second limiting wheel 222 of the limiting member 220, the first limiting wheel 232 of the pulling member 230 and the friction member 234, and then through the through port 160 on one side of the outer shell 110, the axis of the rotating chamber 120 and the through port 160 on the other side, and finally clamped and fixed by the arc plate 243 of the take-up member 240.

[0045] Start the drive component 150 of the rotating irradiation mechanism 100, so that the first motor 151 drives the rotating chamber 120 to rotate at a constant speed inside the outer shell 110 via the belt 152.

[0046] Start the uniform speed motor 246 of the receiver 240, set a constant traction speed "for example, a value in the range of 1-10 m / min", and begin to uniformly traction the cable d to move along its direction of travel.

[0047] S2 periodic directional stretching and rotating irradiation synergistic stage The drive control of the pulling component 230 is activated: the second motor 2341 rotates forward and reverse cyclically according to a preset period (e.g., every 10 seconds as a half cycle). When the second motor 2341 rotates forward, it drives the cable d through the friction rope 2343 on the disc 2342, applying a frictional force opposite to the pulling direction of the take-up component 240, keeping the cable taut in the irradiated section. When the second motor 2341 rotates in reverse, it drives the cable d, applying an additional force in the same direction as the pulling direction of the take-up component 240, causing the cable to slack off in the irradiated section.

[0048] During this process, the continuously rotating chamber 120 drives the electron accelerator 130 on it to revolve around the taut or slack cable d. The electron accelerator 130 is activated to irradiate the cable with a set electron beam energy and beam current intensity.

[0049] s3 Assisted friction and downward pressure coordination stage During the period when the cable d is in a relaxed state due to the force applied in the same direction by the tensioning member 230, the friction mechanism 300 is activated: the third motor 321 of the movable member 320 drives the pressing member 330 to move downward, so that the pressing rod 334 contacts and lightly presses the relaxed cable, changing its local position and shape.

[0050] Meanwhile, the actuator 310, which rotates together with the rotary chamber 120, periodically contacts and rubs the inclined guide rod 311 with the surface of the slack cable d, further disturbing the spatial orientation of the cable.

[0051] Through the synergy of downward pressure and rotational friction, the position and angle of the cable within the irradiation area undergo dynamic and multidimensional changes.

[0052] s4 continuous operation and termination phase The processes of steps s2 and s3 described above are carried out continuously and cyclically until the entire cable section is processed.

[0053] After processing, the following components are turned off in sequence: the electron accelerator 130, the uniform speed motor 246 of the collecting component 240, the second motor 2341 of the pulling component 230, the third motor 321 of the friction mechanism 300, and the first motor 151 of the rotating irradiation mechanism 100.

[0054] This method achieves three-dimensional, multi-angle, and uniform cross-linking treatment of cables by combining uniform traction, periodic directional pulling, rotational irradiation, and auxiliary disturbance in a relaxed state.

[0055] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0057] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A radiation cross-linking device for radiation-crosslinked cables, used for radiation cross-linking of cables (d), characterized in that, include: A rotating irradiation mechanism (100) includes a housing (110), a rotating chamber (120), and an electron accelerator (130). The rotating chamber (120) is disposed in the housing (110) and is rotatably connected to the housing (110). At least one electron accelerator (130) is connected to the rotating chamber (120). The cable (d) passes through the axis of the rotary chamber (120); The pulling mechanism (200) includes: A pulling member (230) and a retracting member (240) are respectively disposed on both sides of the outer casing (110) along the direction of cable (d); The receiving member (240) is configured to drive the cable (d) to move at a constant speed along the direction of travel; The pulling member (230) is configured to apply a periodic directional pulling force to the cable (d). The rotating irradiation mechanism (100) also includes a first bearing (140), a driving member (150), and a passage (160). The first bearing (140) is rotatably connected between the rotating chamber (120) and the outer shell (110). The driving member (150) is used to drive the rotating chamber (120) to rotate. The outer shell (110) has passages (160) on both sides, and the passages (160) of the outer shell (110) are located at the axial position of the rotating chamber (120). The driving member (150) includes a first motor (151), a belt (152), a drive wheel (153), and a first bracket (154). 1) Connected to the outer casing (110), the first bracket (154) is connected to the drive wheel (153), and the drive wheel (153) is connected to the rotary chamber (120) through the first bracket (154). The belt (152) is sleeved on the shaft of the first motor (151) and the drive wheel (153). When the first motor (151) is powered on, it will drive the drive wheel (153) to rotate through the belt (152), thereby providing power for the rotation of the rotary chamber (120). The pulling mechanism (200) also includes a collecting roller (210), a limiting member (220), and a collecting member (240). The collecting roller (210) is connected to the outer casing (110) and is located on the same side as the pulling member (230). The limiting member (220) is connected to the outer casing (110) and is located on the same side as the pulling member (230). A connecting plate (231), a first limiting wheel (232), an elastic element (233), and a friction element (234) are connected to the outer shell (110) between the take-up roller (210) and the pulling member (230). The pulling member (230) includes a connecting plate (231), a first limiting wheel (232), an elastic element (233), and a friction element (234). The connecting plate (231) is connected to the outer shell (110), the elastic element (233) is connected to the connecting plate (231), the first limiting wheel (232) is connected to the elastic element (233), and the friction element (234) is connected to the connecting plate (231). The elastic element (233) includes a vertical plate (2331), a first slider (2332), a first spring (2333), and a bolt (2334). 1) Connected to the connecting plate (231), the first slider (2332) is slidably connected to the vertical plate (2331) to change the position of the first limiting wheel (232). The bolt (2334) is threadedly connected to the vertical plate (2331). A first spring (2333) is connected between the bolt (2334) and the first slider (2332). The friction element (234) includes a second motor (2341), a disc (2342), and a friction rope (2343). The second motor (2341) is connected to the connecting plate (231). The disc (2342) is rotatably connected to the second motor (2341). The friction rope (2343) is connected to the disc (2342).The limiting member (220) includes a horizontal plate (221) and a second limiting wheel (222). The horizontal plate (221) is connected to the connecting plate (231), and the second limiting wheel (222) is rotatably connected to the horizontal plate (221). For the periodic reversal control of the pulling member (230): the second motor (2341) can be driven by a control device configured to periodically control the second motor (2341) to rotate in the forward and reverse directions. When the second motor (2341) is energized, it drives the disc (2342) to rotate. The friction rope (2343) is mounted on the disc (2342) and rubs against the cable d, causing it to move. To accommodate different sizes of cable d, the adjusting bolt (2334) changes the pressure of the first spring (2333) on the first slider (2332), maintaining the second limit wheel (222) against the cable d. This passively presses the cable d against the disc (2342), and the second motor (2341) drives the disc (2342) to rotate, thus rubbing the cable d and causing it to move.

2. The irradiation crosslinking device for an irradiated crosslinked cable according to claim 1, characterized in that, The irradiation crosslinking device (10) also includes a friction mechanism (300); The friction mechanism (300) includes an actuating member (310), a movable member (320), and a pressing member (330). The actuating member (310) is connected to the rotary chamber (120), the movable member (320) is connected to the outer shell (110), the movable member (320) has a movable part, and the pressing member (330) is connected to the movable part of the movable member (320). The pressing member (330) periodically presses against the cable (d).

3. The irradiation crosslinking device for an irradiated crosslinked cable according to claim 2, characterized in that, The actuator (310) includes a guide rod (311) and a second bracket (312). The guide rod (311) is connected to the second bracket (312) and is connected to the rotary chamber (120) through the second bracket (312).

4. The irradiation crosslinking device for an irradiated crosslinked cable according to claim 3, characterized in that, The pressing member (330) includes a second bearing (331), an inclined plate (332), a second spring (333), and a pressing rod (334). The inclined plate (332) is rotatably connected to the movable part of the movable member (320) through the second bearing (331). The second spring (333) is connected between the inclined plate (332) and the movable part of the movable member (320). The pressing rod (334) is connected to the inclined plate (332).

Images