A multi-section flexible cable protection tube

Abstract

The application belongs to the technical field of cables and discloses a multi-section flexible cable protection pipe, which comprises a cable core assembly, a protection mechanism arranged outside the cable core assembly, a protection component, an inner heat conduction sleeve fixedly sleeved on the cable core assembly, a plurality of outer protection sleeves sleeved on the inner heat conduction sleeve and a heat conduction ring arranged between adjacent outer protection sleeves. The inner heat conduction sleeve can absorb heat generated by the operation of the cable core assembly in the first time, the airflow channel formed by separating the inner heat conduction sleeve and the outer protection sleeve through the isolation pad, the heat is uniformly dispersed to each heat dissipation cavity, the heat conduction ring cooperates with the inner heat dissipation fins and the outer heat dissipation fins, the heat contact area is increased, the efficient passive conduction of heat from the heat dissipation cavity to the air outside is realized, the heat insulation ring can block the transmission of high temperature of the heat conduction ring to the outer protection sleeve, meanwhile, the heat dissipation component can discharge the hot air in the heat dissipation cavity, and the heat dissipation effect is further improved.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and in particular to a multi-segment flexible cable protection tube. Background Technology

[0002] A cable is a carrier for transmitting electricity or signals, consisting of a conductor, an insulation layer, and a protective layer. The core is often made of metals with excellent conductivity, such as copper and aluminum, and the outside is wrapped with insulating material to prevent leakage, short circuits, and external interference. Depending on the application, cables can be divided into power cables, control cables, communication cables, etc., and are widely used in urban power grids, building power distribution, rail transit, industrial equipment, and communication networks.

[0003] Existing technology, such as Chinese Utility Model Patent Publication No. CN204066818U, discloses a highly flexible cable protection tube, including an inner tube and an outer tube. The inner tube is made of a rigid material, and its wall has multiple threaded structures and multiple flat tube sections spaced apart. The threaded structure near the outer tube consists of multiple linear shapes, while the threaded structure away from the outer tube consists of multiple smooth planes. The outer tube is made of a flexible material. The highly flexible cable protection tube disclosed in this utility model optimizes the structure of the cable protection sleeve and adjusts the raw material of the outer tube, resulting in good bending performance and high protection strength for the cable.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: In the prior art, cable protective sleeves are mostly made of materials such as polyvinyl chloride and ethylene propylene diene monomer (EPDM) rubber. Cable protective sleeves made of this type can operate at a temperature of 70°C. Although they can operate at this temperature, in actual working conditions, if they are continuously exposed to a working temperature environment of 70°C for a long time, it is difficult to dissipate heat effectively. The protective sleeve is prone to aging, hardening, cracking, and other phenomena, which leads to the loss of effective protection for the internal wire cores, resulting in damage to the wire cores, a decrease in insulation performance, and ultimately a significant shortening of the overall service life of the cable, affecting the reliability and safety of cable operation. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a multi-segment flexible cable protection pipe.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a multi-segment flexible cable protection pipe, comprising a cable core assembly, wherein a protection mechanism is provided outside the cable core assembly, the protection mechanism comprising a protection component, wherein the protection component comprises an inner heat-conducting sleeve fixedly sleeved on the cable core assembly, a plurality of outer protective sleeves sleeved on the inner heat-conducting sleeve, a heat-conducting ring disposed between adjacent outer protective sleeves, and two heat-insulating rings fixed on both sides of the heat-conducting rings and fixedly connected to the outer protective sleeves, wherein a heat dissipation cavity is formed between the heat-conducting rings and the inner heat-conducting sleeve, the protection component further comprises a heat-conducting component for heat conduction, and the protection mechanism further comprises a heat dissipation component for discharging hot air from the heat dissipation cavity.

[0007] By adopting the above technical solution, during use, the multi-section outer protective sleeve, together with the heat-conducting ring and the inner heat-conducting sleeve, can effectively protect the cable core assembly. At the same time, the inner heat-conducting sleeve can absorb the heat of the cable core assembly and, together with the heat dissipation cavity, the heat-conducting ring and the heat-conducting component, conduct heat dissipation. Meanwhile, the heat dissipation component can expel the hot air in the heat dissipation cavity, further improving the heat dissipation effect.

[0008] Furthermore, the protective component also includes multiple isolation pads fixed between the inner heat-conducting sleeve and the outer protective sleeve, so that an airflow channel communicating with the heat dissipation cavity is formed between the inner heat-conducting sleeve and the outer protective sleeve.

[0009] By adopting the above technical solution, the isolation pad is made of flexible material, which separates the inner heat-conducting sleeve and the outer protective sleeve. The airflow channel formed at this time allows hot air to enter the heat dissipation cavity for heat dissipation.

[0010] Furthermore, the heat-conducting component includes multiple inner heat dissipation fins fixed inside the heat-conducting ring and outer heat dissipation fins fixed outside the heat-conducting ring.

[0011] By adopting the above technical solution, the inner heat dissipation fins can absorb the heat in the heat dissipation cavity, and work with the heat conduction ring and the outer heat dissipation fins to conduct heat to the external objects or air, thereby achieving the heat dissipation effect.

[0012] Furthermore, the heat dissipation component includes multiple hollow tubes that penetrate and are fixedly connected to the heat-conducting rings and have an open top, heat-conducting pipes fixed on the hollow tubes, a dustproof plate fixed inside the hollow tubes, a shaft that penetrates the dustproof plate and is rotatably connected to the dustproof plate, and a cleaning brush and fan blades fixedly sleeved on the shaft. The cleaning brush is located outside the hollow tube, and the fan blades are located inside the hollow tube. The bottom of the hollow tube has a ventilation hole communicating with the heat dissipation cavity. The surface of the heat-conducting ring has multiple micro-holes. The heat dissipation component also includes a drive assembly for driving the shaft to rotate.

[0013] By adopting the above technical solution, during the heat dissipation process, the ventilation holes and micro-holes connect the heat dissipation cavity with the outside world, allowing outside air to enter and the gas in the heat dissipation cavity to be discharged. At the same time, when the drive component controls the shaft to rotate, it can drive the cleaning brush and fan blades to rotate. The cleaning brush can effectively clean the dustproof plate, while the fan blades, in conjunction with the ventilation holes and micro-holes, can discharge the hot air in the heat dissipation cavity. The micro-holes can effectively allow air to enter, while also preventing impurities from entering.

[0014] Furthermore, the heat dissipation component also includes a heat-conducting plate fixed to the lower end of the heat-conducting pipe, the heat-conducting plate having an arc-shaped structure.

[0015] By adopting the above technical solution, the heat pipe, together with the arc-shaped heat-conducting sheet, can fit better onto the inner heat-conducting sleeve, and work with the heat pipe to dissipate the heat from the inner heat-conducting sleeve.

[0016] Furthermore, the heat pipe has a cavity, and the drive assembly includes a piston rod slidably connected in the cavity and passing through the heat pipe, an SMA spring fixed between the piston rod and the bottom wall of the heat pipe, a compression spring fixed between the piston rod and the top wall of the heat pipe, multiple spiral blades fixed on the surface of the shaft, a hollow sleeve and a stabilizing rod fixed at the upper end of the piston rod, two seats fixed in the hollow sleeve, a top rod rotatably connected in the seat, and a roller sleeved on the top rod and rotatably connected to the top rod. The surface of the shaft has a guide groove for the stabilizing rod to be inserted.

[0017] By adopting the above technical solution, during the heat absorption process of the heat-conducting sheet and heat-conducting pipe, when the temperature of the SMA spring reaches above 45°C, the force increases, thereby pushing the piston rod, hollow sleeve and stabilizing rod to move. The stabilizing rod enters the guide groove. At this time, the top rod is limited by the seat body and contacts the spiral blade with the roller, thereby driving the shaft to rotate. The shaft drives the cleaning brush to clean the dustproof plate and at the same time drives the fan blade to rotate, expelling the hot air in the heat dissipation cavity. When the temperature drops, the force of the SMA spring decreases, and at this time the compression spring drives the piston rod to reset.

[0018] Furthermore, the drive assembly also includes a three-way pipe fixed on the heat-conducting pipe and connected to the cavity, an inlet check valve and a drain check valve fixed at the other two ends of the three-way pipe, a heat insulation pipe one fixed at the inlet end of the inlet check valve, a heat insulation pipe two fixed at the outlet end of the drain check valve, and a heat insulation tank fixed inside the hollow tube. The heat insulation pipe one and the heat insulation pipe two are respectively connected to the heat insulation tank.

[0019] By adopting the above technical solution, the cavity is always filled with liquid during use. When the heat pipe and heat-conducting plate absorb heat and the liquid is heated synchronously, the heat can be transferred to the SMA spring. When the SMA spring drives the piston rod to move, the piston rod can work with the water inlet check valve and the first heat insulation pipe to draw the low-temperature liquid in the heat insulation tank into the cavity and cool down the liquid in the cavity. The cooled liquid causes the SMA spring to cool down synchronously, squeezing the spring and driving the piston rod to return to its original position. Then, with the help of the drain check valve and the second heat insulation pipe, the liquid is discharged into the heat insulation tank, thus performing a cyclical operation.

[0020] Furthermore, the drive assembly also includes a limiting rod fixed to the surface of the top rod, and an arc-shaped groove for inserting the limiting rod is provided on the inner side of the seat.

[0021] By adopting the above technical solution, when the hollow sleeve drives the seat to reset, the push rod and the spiral blade are squeezed together, thereby rotating on the seat. The push rod synchronously drives the limiting rod to move in the arc groove, which can limit the rotation angle of the push rod, so that the rotation angle of the push rod in the seat is less than 90 degrees, so as to facilitate better reset, while ensuring that the shaft does not rotate when the seat and the push rod descend.

[0022] Furthermore, the outer protective sleeve is composed of polyvinyl chloride, heat stabilizer, light stabilizer, flame retardant and lubricant, and the polyvinyl chloride is PVC-SG3.

[0023] By adopting the above technical solutions, PVC-SG3 has excellent flexibility and bending resistance. Furthermore, through the synergistic effect of various additives, it ensures processing stability, heat and weather resistance, flame retardancy, and surface smoothness.

[0024] Furthermore, the cable core assembly includes multiple cores, an insulating sleeve fixedly fitted onto the cores, and a sealing layer filled between the insulating sleeve and the inner heat-conducting sleeve.

[0025] In summary, the present invention has the following beneficial effects: 1. In this application, the inner heat-conducting sleeve can absorb the heat generated by the operation of the cable core assembly in the first time. The airflow channel formed by the isolation pad separating the inner heat-conducting sleeve and the outer protective sleeve will evenly distribute the heat to each heat dissipation cavity. The heat-conducting ring, together with the inner heat dissipation fins on the inner side and the outer heat dissipation fins on the outer side, increases the heat contact area and realizes efficient passive conduction of heat from the heat dissipation cavity to the outside air. The heat insulation ring can block the high temperature of the heat-conducting ring from being transferred to the outer protective sleeve. At the same time, the heat dissipation component can exhaust the hot air in the heat dissipation cavity, further improving the heat dissipation effect. 2. In this application, by setting heat dissipation components, the arc-shaped heat-conducting plate is tightly attached to the inner heat-conducting sleeve. With the heat-conducting pipe, the core heat of the inner heat-conducting sleeve can be quickly dissipated. At the same time, the SMA spring is heated. Due to the temperature phase change, the force value of the SMA spring increases, which pushes the piston rod, hollow sleeve and stabilizer rod to move. Through the cooperation of the top rod, roller and spiral blade, the shaft is driven to rotate, realizing the synchronous action of fan blade exhaust and cleaning brush cleaning. When the temperature drops below the threshold, the force value of the SMA spring decreases, and the squeeze spring pushes the components to reset. 3. In this application, the cavity always contains liquid. When the heat pipe and heat-conducting plate absorb heat, the liquid is heated synchronously and can transfer heat to the SMA spring. When the SMA spring drives the piston rod to move, the piston rod can work with the water inlet check valve and the first heat insulation pipe to draw the low-temperature liquid in the heat insulation tank into the cavity and cool the liquid in the cavity. The cooled liquid causes the SMA spring to cool synchronously, squeezing the spring and driving the piston rod to return to its original position. The liquid is then discharged into the heat insulation tank with the drain check valve and the second heat insulation pipe, thus performing a cyclical operation.

[0026] 4. In this application, the outer protective sleeve is made of PVC-SG3 polyvinyl chloride resin as the base material, combined with heat stabilizer, light stabilizer, flame retardant and lubricant. The high degree of polymerization of PVC-SG3 gives the protective sleeve excellent flexibility and bending resistance. The synergistic effect of various additives effectively improves the processing stability, heat and weather resistance, flame retardant safety and surface smoothness of the protective sleeve. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the inner heat-conducting sleeve, the outer protective sleeve, and the isolation pad; Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present invention, highlighting the connection structure between the heat-conducting ring, the inner heat dissipation fins, and the outer heat dissipation fins; Figure 4 This is a schematic diagram illustrating the connection structure between the heat-conducting ring and the hollow tube in an embodiment of the present invention; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram illustrating the connection structure between the hollow tube, the heat pipe, and the heat-conducting sheet in an embodiment of the present invention; Figure 7 yes Figure 6 Another structural diagram from a different perspective; Figure 8 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the piston rod and the cavity; Figure 9 yes Figure 8 Enlarged view of point B in the middle; Figure 10 This is a schematic diagram illustrating the connection structure between the shaft, cleaning brush, and fan blades in an embodiment of the present invention.

[0028] In the diagram: 1. Cable core assembly; 11. Core; 12. Insulation sleeve; 13. Sealing layer; 2. Protection mechanism; 21. Protection component; 211. Inner heat-conducting sleeve; 212. Outer protective sleeve; 213. Isolation pad; 214. Heat-conducting ring; 215. Heat insulation ring; 216. Inner heat dissipation fins; 217. Outer heat dissipation fins; 22. Heat dissipation component; 221. Hollow tube; 222. Heat-conducting pipe; 223. Dustproof plate; 224. Shaft; 225. Cleaning brush; 226. Fan blade; 227. Piston rod; 228. SM A. Spring; 229. Compression spring; 2210. T-junction; 2211. Inlet check valve; 2212. Drain check valve; 2213. Insulation pipe one; 2214. Insulation pipe two; 2215. Insulation tank; 2216. Spiral blade; 2217. Seat; 2218. Top rod; 2219. Roller; 2220. Limiting rod; 2221. Heat-conducting plate; 2222. Hollow sleeve; 2223. Stabilizing rod; 3. Heat dissipation cavity; 4. Ventilation hole; 5. Micro hole; 6. Arc groove; 7. Guide groove; 8. Cavity. Detailed Implementation

[0029] 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 some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] like Figure 1-10As shown in the illustration, this application discloses a multi-segment flexible cable protection pipe, including a cable core assembly 1 and a protection mechanism 2, with the protection mechanism 2 disposed outside the cable core assembly 1. The protection mechanism 2 includes a protection component 21 and a heat dissipation component 22. The protection component 21 includes an inner heat-conducting sleeve 211, an outer protective sleeve 212, a heat-conducting ring 214, a heat-insulating ring 215, and a heat-conducting assembly. The inner heat-conducting sleeve 211 is fixedly fitted onto the cable core assembly 1. Multiple outer protective sleeves 212 are provided, and multiple outer protective sleeves 212 are fitted onto the inner heat-conducting sleeve 211. The heat-conducting ring 214 is disposed between adjacent outer protective sleeves 212, and two heat-insulating rings 215 are provided. The two heat-insulating rings 215 are fixed on both sides of the heat-conducting ring 214 and fixedly connected to the outer protective sleeves 212, forming a heat dissipation cavity 3 between the heat-conducting ring 214 and the inner heat-conducting sleeve 211. During use, the multi-section outer protective sleeve 212, together with the heat-conducting ring 214 and the inner heat-conducting sleeve 211, can effectively protect the cable core assembly 1. At the same time, the inner heat-conducting sleeve 211 can absorb the heat of the cable core assembly 1 and, together with the heat dissipation cavity 3, the heat-conducting ring 214 and the heat-conducting component, can conduct heat dissipation. Meanwhile, the heat dissipation component 22 can expel the hot air in the heat dissipation cavity 3, further improving the heat dissipation effect.

[0031] The protective component 21 also includes multiple isolation pads 213. These multiple isolation pads 213 are fixed between the inner heat-conducting sleeve 211 and the outer protective sleeve 212, forming an airflow channel between the inner heat-conducting sleeve 211 and the outer protective sleeve 212 that communicates with the heat dissipation cavity 3. The isolation pads 213 are made of flexible material, separating the inner heat-conducting sleeve 211 and the outer protective sleeve 212. The resulting airflow channel allows hot air to enter the heat dissipation cavity 3 for heat dissipation.

[0032] The heat-conducting component is used for heat conduction and includes inner heat dissipation fins 216 and outer heat dissipation fins 217. Multiple inner heat dissipation fins 216 are provided. These inner heat dissipation fins 216 are fixed inside the heat-conducting ring 214, and the outer heat dissipation fins 217 are fixed outside the heat-conducting ring 214. The inner heat dissipation fins 216 can absorb heat from the heat dissipation cavity 3 and, together with the heat-conducting ring 214 and the outer heat dissipation fins 217, conduct heat to external objects or air to achieve a heat dissipation effect.

[0033] The heat dissipation component 22 is used to expel hot air from the heat dissipation cavity 3. The heat dissipation component 22 includes a hollow tube 221, a heat-conducting pipe 222, a dustproof plate 223, a shaft 224, a cleaning brush 225, and a fan blade 226. Multiple hollow tubes 221 are provided, each passing through a heat-conducting ring 214 and fixedly connected to it, with an open top. The heat-conducting pipes 222 are fixed to the hollow tubes 221. The dustproof plate 223 is fixed inside the hollow tubes 221, and the shaft 224 passes through the dustproof plate 223 and is rotatably connected to it. The cleaning brush 225 and the fan blade 226 are fixedly sleeved on the shaft 224. The cleaning brush 225 is located outside the hollow tube 221, and the fan blade 226 is located inside the hollow tube 221. A ventilation hole 4 communicating with the heat dissipation cavity 3 is opened at the bottom of the hollow tube 221, and multiple micro-holes 5 are opened on the surface of the heat-conducting ring 214. During the heat dissipation process, the ventilation holes 4 and micro-holes 5 connect the heat dissipation cavity 3 with the outside world, allowing outside air to enter and the gas in the heat dissipation cavity 3 to be expelled. At the same time, when the drive component controls the shaft 224 to rotate, it can drive the cleaning brush 225 and the fan blade 226 to rotate. The cleaning brush 225 can effectively clean the dustproof plate 223, while the fan blade 226, in conjunction with the ventilation holes 4 and micro-holes 5, can expel the hot air in the heat dissipation cavity 3. The micro-holes 5 can effectively allow air to enter, while also preventing impurities from entering.

[0034] The heat dissipation component 22 also includes a heat-conducting plate 2221, which is fixed to the lower end of the heat-conducting pipe 222. The heat-conducting plate 2221 has an arc-shaped structure. The heat-conducting pipe 222, together with the arc-shaped heat-conducting plate 2221, can fit better onto the inner heat-conducting sleeve 211, and work with the heat-conducting pipe 222 to dissipate the heat from the inner heat-conducting sleeve 211.

[0035] A cavity 8 is formed inside the heat pipe 222. A drive assembly is used to drive the shaft 224 to rotate. The drive assembly includes a piston rod 227, an SMA spring 228, a compression spring 229, a spiral blade 2216, a stabilizer rod 2223, a seat 2217, a push rod 2218, and a roller 2219. The piston rod 227 is slidably connected inside the cavity 8 and passes through the heat pipe 222. The SMA spring 228 is fixed between the piston rod 227 and the bottom wall of the heat pipe 222. The compression spring 229 is fixed between the piston rod 227 and the top wall of the heat pipe 222. Multiple spiral blades 2216 are provided and fixed to the surface of the shaft 224. A hollow sleeve 2222 and a stabilizer rod 2223 are fixed to the upper end of the piston rod 227. Two seats 2217 are provided and fixed inside the hollow sleeve 2222. The top rod 2218 is rotatably connected inside the base 2217, the roller 2219 is sleeved on the top rod 2218 and rotatably connected to the top rod 2218, and the surface of the shaft 224 is provided with a guide groove 7 for the insertion of the stabilizer 2223. During the heat absorption process of the heat-conducting plate 2221 and the heat-conducting pipe 222, when the temperature of the SMA spring 228 reaches above 45°C, the force increases, thereby pushing the piston rod 227, the hollow sleeve 2222, and the stabilizing rod 2223 to move. The stabilizing rod 2223 enters the guide groove 7. At this time, the push rod 2218 is limited by the seat 2217 and, together with the roller 2219, contacts the spiral blade 2216, thereby driving the shaft 224 to rotate. The shaft 224 drives the cleaning brush 225 to clean the dust plate 223 and at the same time drives the fan blade 226 to rotate, expelling the hot air from the heat dissipation cavity 3. When the temperature drops, the force of the SMA spring 228 decreases, at which point the compression spring 229 drives the piston rod 227 to reset.

[0036] The drive assembly also includes a three-way pipe 2210, an inlet check valve 2211, a drain check valve 2212, a first heat insulation pipe 2213, a second heat insulation pipe 2214, and a heat insulation tank 2215. The three-way pipe 2210 is fixed to the heat-conducting pipe 222 and connected to the cavity 8. The inlet check valve 2211 and the drain check valve 2212 are fixed at the other two ends of the three-way pipe 2210, and the first heat insulation pipe 2213 is fixed at the inlet end of the inlet check valve 2211. Insulation pipe 2214 is fixed to the outlet of drain check valve 2212, and insulation tank 2215 is fixed inside hollow tube 221. Insulation pipe 1 2213 and insulation pipe 2214 are respectively connected to insulation tank 2215. During use, the cavity 8 always contains liquid. When heat conduction pipe 222 and heat conduction plate 2221 absorb heat, the liquid is heated synchronously, and the heat can be transferred to SMA spring 228. SMA spring 228 drives piston rod 2 When the piston rod 227 moves, it can work with the inlet check valve 2211 and the first heat insulation pipe 2213 to draw the low-temperature liquid in the heat insulation tank 2215 into the cavity 8 and cool the liquid in the cavity 8. The cooled liquid causes the SMA spring 228 to cool down synchronously, and the squeeze spring 229 drives the piston rod 227 to return to its original position. It then works with the drain check valve 2212 and the second heat insulation pipe 2214 to drain the liquid into the heat insulation tank 2215, thus performing a recycling operation.

[0037] The drive assembly also includes a limiting rod 2220, which is fixed to the surface of the top rod 2218. An arc-shaped groove 6 is provided on the inner side of the seat 2217 for the limiting rod 2220 to insert into. When the hollow sleeve 2222 drives the seat 2217 to reset, the top rod 2218 is pressed against the spiral plate 2216, causing it to rotate on the seat 2217. Simultaneously, the top rod 2218 drives the limiting rod 2220 to move within the arc-shaped groove 6, thus limiting the rotation angle of the top rod 2218 to less than 90 degrees within the seat 2217 for better reset. This also ensures that the shaft 224 does not rotate when the seat 2217 and the top rod 2218 descend. Furthermore, a torsion spring can be added at the rotation point of the limiting rod 2220 to ensure more stable reset.

[0038] The outer protective sleeve 212 is composed of polyvinyl chloride, heat stabilizer, light stabilizer, flame retardant and lubricant. The polyvinyl chloride is PVC-SG3, which has excellent flexibility and bending resistance. Through the synergistic effect of various additives, processing stability, heat and weather resistance, flame retardant safety and surface smoothness are guaranteed.

[0039] The cable core assembly 1 includes a core body 11, an insulating sleeve 12, and a sealing layer 13, with multiple sets of core bodies 11. The insulating sleeve 12 is fixedly sleeved on the core body 11, and the sealing layer 13 is filled between the insulating sleeve 12 and the inner heat-conducting sleeve 211.

[0040] The operating principle of the multi-segment flexible cable protection tube in this embodiment is as follows: During use, the multi-segment outer protective sleeve 212, together with the heat-conducting ring 214 and the inner heat-conducting sleeve 211, can effectively protect the cable core assembly 1. At the same time, the inner heat-conducting sleeve 211 can absorb the heat of the cable core assembly 1 and, together with the heat dissipation cavity 3, the heat-conducting ring 214, the inner heat dissipation fins 216 and the outer heat dissipation fins 217, can conduct heat dissipation. Meanwhile, the ventilation holes 4 in the hollow tube 221, together with the micro-holes 5, allow hot air to escape. The insulating pad 213 separates the inner heat-conducting sleeve 211 and the outer protective sleeve 212, forming an airflow channel that allows hot air to enter the heat dissipation cavity 3 for heat dissipation. The heat-conducting pipe 222, in conjunction with the arc-shaped heat-conducting plate 2221, can better fit onto the inner heat-conducting sleeve 211, and work with the heat-conducting pipe 222 to dissipate the heat from the inner heat-conducting sleeve 211. The cavity 8 always stores liquid. When the heat-conducting pipe 222 and the heat-conducting plate 2221 absorb heat, and the liquid is heated simultaneously, the heat can be transferred to the SMA spring. When the temperature of the SMA spring 228 reaches above 45℃, its force increases, thereby pushing the piston rod 227, hollow sleeve 2222, and stabilizer rod 2223 to move. The stabilizer rod 2223 enters the guide groove 7. At this time, the push rod 2218 is limited by the seat 2217 and, together with the roller 2219, contacts the spiral blade 2216, thereby driving the shaft 224 to rotate. The shaft 224 drives the cleaning brush 225 to clean the dust plate 223, and at the same time drives the fan blade 226 to rotate. When the piston rod 227 moves, it can work with the inlet check valve 2211 and the first heat insulation pipe 2213 to draw the low-temperature liquid in the heat insulation tank 2215 into the cavity 8 and cool the liquid in the cavity 8. The cooled liquid causes the SMA spring 228 to cool down synchronously, and the squeeze spring 229 drives the piston rod 227 to return to its original position. Then, with the help of the drain check valve 2212 and the second heat insulation pipe 2214, the liquid is discharged into the heat insulation tank 2215, thus performing a recycling operation.

[0041] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A multi-segment flexible cable protection pipe, comprising a cable core assembly (1), characterized in that: The cable core assembly (1) is provided with a protection mechanism (2). The protection mechanism (2) includes a protection component (21). The protection component (21) includes an inner heat-conducting sleeve (211) fixedly sleeved on the cable core assembly (1), a plurality of outer protective sleeves (212) sleeved on the inner heat-conducting sleeve (211), a heat-conducting ring (214) disposed between adjacent outer protective sleeves (212), and two heat-insulating rings (215) fixed on both sides of the heat-conducting ring (214) and fixedly connected to the outer protective sleeve (212). A heat dissipation cavity (3) is formed between the heat-conducting ring (214) and the inner heat-conducting sleeve (211). The protection component (21) also includes a heat-conducting component for heat conduction. The protection mechanism (2) also includes a heat dissipation component (22) for discharging hot air from the heat dissipation cavity (3).

2. The multi-segment flexible cable protection pipe according to claim 1, characterized in that: The protective component (21) also includes multiple isolation pads (213) fixed between the inner heat-conducting sleeve (211) and the outer protective sleeve (212), so that an airflow channel connected to the heat dissipation cavity (3) is formed between the inner heat-conducting sleeve (211) and the outer protective sleeve (212).

3. The multi-segment flexible cable protection pipe according to claim 1, characterized in that: The heat-conducting assembly includes multiple inner heat dissipation fins (216) fixed inside the heat-conducting ring (214) and outer heat dissipation fins (217) fixed outside the heat-conducting ring (214).

4. The multi-segment flexible cable protection pipe according to claim 1, characterized in that: The heat dissipation component (22) includes a hollow tube (221) that passes through the heat-conducting ring (214) and is fixedly connected to the heat-conducting ring (214) and has an open top, a heat-conducting pipe (222) fixed on the hollow tube (221), a dustproof plate (223) fixed inside the hollow tube (221), a shaft (224) that passes through the dustproof plate (223) and is rotatably connected to the dustproof plate (223), and a cleaning brush (225) and a fan blade (226) fixedly sleeved on the shaft (224). The cleaning brush (225) is located outside the hollow tube (221), and the fan blade (226) is located inside the hollow tube (221). The bottom of the hollow tube (221) is provided with a ventilation hole (4) communicating with the heat dissipation cavity (3). The surface of the heat-conducting ring (214) is provided with a plurality of micro holes (5). The heat dissipation component (22) also includes a drive assembly for driving the shaft (224) to rotate.

5. A multi-segment flexible cable protection pipe according to claim 4, characterized in that: The heat dissipation component (22) also includes a heat-conducting plate (2221) fixed at the lower end of the heat-conducting pipe (222), and the heat-conducting plate (2221) has an arc-shaped structure.

6. A multi-segment flexible cable protection pipe according to claim 5, characterized in that: The heat pipe (222) has a cavity (8) inside. The drive assembly includes a piston rod (227) slidably connected inside the cavity (8) and passing through the heat pipe (222), an SMA spring (228) fixed between the piston rod (227) and the bottom wall of the heat pipe (222), a compression spring (229) fixed between the piston rod (227) and the top wall of the heat pipe (222), and multiple spiral blades (2216) fixed on the surface of the shaft (224). The shaft (224) has a hollow sleeve (2222) and a stabilizer (2223) fixed to the upper end of the piston rod (227), two seats (2217) fixed inside the hollow sleeve (2222), a push rod (2218) rotatably connected inside the seat (2217), and a roller (2219) sleeved on the push rod (2218) and rotatably connected to the push rod (2218). The surface of the shaft (224) is provided with a guide groove (7) for the stabilizer (2223) to be inserted.

7. A multi-segment flexible cable protection pipe according to claim 6, characterized in that: The drive assembly also includes a three-way pipe (2210) fixed on the heat-conducting pipe (222) and connected to the cavity (8), an inlet check valve (2211) and a drain check valve (2212) fixed at the other two ends of the three-way pipe (2210), a heat insulation pipe one (2213) fixed at the inlet end of the inlet check valve (2211), a heat insulation pipe two (2214) fixed at the outlet end of the drain check valve (2212), and a heat insulation tank (2215) fixed inside the hollow pipe (221). The heat insulation pipe one (2213) and the heat insulation pipe two (2214) are respectively connected to the heat insulation tank (2215).

8. A multi-segment flexible cable protection pipe according to claim 7, characterized in that: The drive assembly also includes a limiting rod (2220) fixed on the surface of the top rod (2218), and the inner side of the seat (2217) is provided with an arc-shaped groove (6) for the limiting rod (2220) to be inserted.

9. A multi-segment flexible cable protection pipe according to claim 1, characterized in that: The outer protective sleeve (212) is composed of polyvinyl chloride, heat stabilizer, light stabilizer, flame retardant and lubricant, and the polyvinyl chloride is PVC-SG3.

10. A multi-segment flexible cable protection pipe according to claim 1, characterized in that: The cable core assembly (1) includes multiple cores (11), an insulating sleeve (12) fixedly sleeved on the core (11), and a sealing layer (13) filled between the insulating sleeve (12) and the inner heat-conducting sleeve (211).

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