A cable protection sleeve

Abstract

The application relates to the technical field of cable protection, in particular to a cable protection sleeve. The protection sleeve comprises an inner layer, an intermediate layer and an outer layer, the intermediate layer comprises a first layer and a second layer, the first layer is fixedly connected with the inner layer, and the second layer is fixedly connected with the outer layer; the first layer is made of glass fiber reinforced composite material, the second layer is a grid skeleton structure made of shape memory alloy material, the grid skeleton structure is embedded in the first layer, and a magneto-rheological elastomer is filled in the internal grid space of the grid skeleton structure; the inner layer is a waterproof insulation layer sprayed on the first layer; the outer layer is made of modified polyurethane material, and the outer layer is a corrugated structure; the cable protection sleeve is provided with an opening structure, both sides of the opening structure are provided with sealing parts, the sealing parts on both sides can be adapted to abut to seal the installation cavity of the inner layer from the outside, and the sealing parts are made of rubber material; the inner wall surface of the inner layer is provided with a plurality of rubber support rings, the rubber support rings protrude from the inner wall surface of the inner layer, and the rubber support rings are provided with heat conduction grooves.

Description

Technical Field

[0001] This application relates to the field of cable protection technology, specifically to a cable protection sleeve. Background Technology

[0002] Cable protection sleeves are important protective components during cable laying and use, and are widely used in industrial construction, engineering construction and other scenarios. Their performance directly affects the operational safety, stability and service life of cables.

[0003] Existing cable protection sleeves are mostly made of single materials such as metal or rigid plastic. While they can achieve basic protection, they reveal many technical defects in practical engineering applications, making it difficult to meet the requirements of lightweight, easy assembly, and adaptability to complex working conditions. Specifically: First, traditional metal or rigid plastic sleeves have high matrix density and overall weight. In construction scenarios where cables and sleeves need to be frequently moved, dragged, and their placement adjusted, the operation is inconvenient, increasing the workload of construction workers. Second, existing protective sleeves are mostly one-piece closed tube structures, and the assembly method with cables is generally axial insertion. That is, by applying force and dragging the cable, the cable is forced to pass through the hollow cavity of the sleeve from one end to the other. Under this assembly method, the cable is prone to radial displacement and circumferential twisting within the cavity. The continuous friction between the outer surface of the cable and the inner wall of the conduit cavity can easily cause scratches and damage to the cable sheath, affecting the insulation and structural integrity of the cable. Thirdly, the tight fit between the enclosed tube and the outer surface of the cable creates a closed space that hinders the conduction and dissipation of heat, such as Joule heating, during the cable's operation. Heat tends to accumulate in the contact area, which not only reduces the cable's transmission efficiency but also accelerates the aging of the cable and conduit materials, shortening the overall service life. Fourthly, conventional cable protective conduits are poorly designed in terms of wear resistance, vibration resistance, and sealing insulation performance, resulting in poor environmental adaptability. Under harsh conditions such as vibration and impact, sand and dust abrasion, and water splashing common on construction sites, the conduit is prone to surface wear and structural cracking, leading to a decrease in insulation performance or even failure. In severe cases, it can also cause safety hazards such as cable short circuits and leakage.

[0004] In summary, developing a cable protection sleeve that combines lightweight and easy assembly characteristics with excellent wear resistance and insulation properties, and is suitable for complex and harsh working conditions such as construction sites, has become an urgent technical problem to be solved in this field. Summary of the Invention

[0005] In view of this, this application provides a cable protection sleeve, which aims to improve the technical problems of existing cable protection sleeves, such as large weight, difficult assembly, easy damage to cables, and poor wear resistance and insulation performance under harsh working conditions.

[0006] This application provides a cable protection sleeve, including an inner layer, a middle layer and an outer layer arranged sequentially from the inside to the outside, wherein the inner layer encloses and forms an installation cavity for accommodating cables;

[0007] The intermediate layer includes a first layer and a second layer that are arranged sequentially from the inside out and fixedly connected. The first layer is fixedly connected to the inner layer, and the second layer is fixedly connected to the outer layer. The first layer is made of glass fiber reinforced composite material, and the second layer is a mesh skeleton structure made of shape memory alloy. The mesh skeleton structure is embedded in the first layer on the side close to the first layer, and magnetorheological elastomer is filled in the internal mesh space on the side of the mesh skeleton structure away from the first layer.

[0008] The inner layer is a waterproof and insulating layer sprayed onto the surface of the first layer that is opposite to the second layer;

[0009] The outer layer is made of modified polyurethane material and has a corrugated structure.

[0010] The cable protection sleeve extends axially and radially to the opening structure of the mounting cavity. Both sides of the opening structure are provided with sealing parts. The sealing parts on both sides of the opening structure can be adapted to abut against each other to seal and isolate the inner mounting cavity from the outside. The sealing parts are made of rubber.

[0011] The inner wall of the inner layer is provided with a plurality of rubber support rings spaced apart along the axial direction of the cable protection sleeve. The rubber support rings protrude from the inner wall of the inner layer, and each rubber support ring is provided with a heat-conducting groove.

[0012] Preferably, there are multiple heat-conducting grooves, which are evenly distributed circumferentially along the inner wall surface of the inner layer.

[0013] Preferably, the outer layer is made of a modified polyurethane material doped with nano-silica.

[0014] Preferably, the corrugation height of the outer corrugated structure is 3 mm.

[0015] Preferably, the mesh skeleton structure of the second layer is a rhomboid mesh.

[0016] Preferably, the inner layer has a thickness of 2 mm and a Shore hardness of 60 ± 5 HA.

[0017] Preferably, the inner layer contains 95% to 98% silicone and 2% to 5% graphene thermal conductive particles by mass percentage, and the sum of the mass percentages of the silicone and graphene thermal conductive particles is 100%.

[0018] Preferably, along the extension direction of the cable protection sleeve, the two side walls of the opening structure are arranged in a toothed, staggered configuration.

[0019] Compared with the prior art, the cable protection sleeve provided in this application achieves at least the following beneficial effects:

[0020] The inner layer is a waterproof and insulating layer that directly encloses the cable installation cavity, providing basic waterproof, dustproof, and insulating protection for the cables inside. Combined with the rubber seal at the axial opening, the seal effectively isolates the installation cavity from the external environment, preventing external moisture and dust from damaging the cables and eliminating safety hazards such as cable leakage and short circuits. The middle layer is a combination of a first layer of glass fiber reinforced composite material and a second layer of shape memory alloy mesh skeleton. The first layer, relying on the properties of the glass fiber reinforced composite material, provides basic tensile and compressive resistance to the sleeve, effectively resisting conventional external tensile and compressive forces. The second layer, with its rigidity, provides overall deformation-resistant support for the sleeve. The side of the skeleton closest to the first layer is embedded within it, ensuring strong connection stability and effectively preventing external compression or collisions from deforming the sleeve and compressing the internal cables. Simultaneously, the mesh space away from the first layer is filled with magnetorheological elastomer, further buffering external impacts and improving the sleeve's impact resistance and shock absorption performance, resulting in a double-strengthened protective structure. The outer layer uses a corrugated structure made of modified polyurethane material, which is in direct contact with the external environment. Relying on the high wear resistance of modified polyurethane and the scratch-resistant properties of the corrugated structure, it can effectively block minor external abrasion and scratch damage, improving the weather resistance and service life of the sleeve. At the same time, the corrugated structure has good flexibility and can flexibly adapt to the small-angle bending requirements during cable laying, taking into account both structural protection and laying flexibility, and adapting to different laying scenarios.

[0021] In addition, rubber support rings protruding from the inner wall are provided at intervals on the inner wall. After the cable is inserted into the installation cavity, the rubber support rings can provide flexible support for the cable, creating a gap between the outer wall of the cable and the inner wall of the inner layer. This avoids friction damage caused by the cable directly contacting the inner wall of the inner layer. At the same time, the heat conduction grooves on the rubber support rings can allow air to circulate in the gap, helping to dissipate heat during the operation of the cable and preventing heat accumulation from affecting the normal operation of the cable. This achieves the dual function of cable protection and heat dissipation.

[0022] The sleeve extends along the entire axis, and the axial opening structure design enables the rapid installation and removal of cables, eliminating the need for axial dragging and threading of cables as required by existing structures. This improves the ease of operation for cable installation and subsequent maintenance.

[0023] In summary, the cable protection sleeve provided in this embodiment has fixed connections between each layer, tight interlayer bonding, strong overall structural stability, and coordinated functional structures. It achieves all-round protection while taking into account ease of use and adaptability, and has a wide range of applications. Attached Figure Description

[0024] Figure 1 The figure shown is a schematic diagram of the cross-sectional structure of the cable protection sleeve provided in an embodiment of this application;

[0025] Figure 2 The diagram shown is a structural schematic of the intermediate layer in an embodiment of this application.

[0026] Figure 3 The diagram shown is a schematic representation of the internal structure of the installation cavity according to an embodiment of this application.

[0027] Figure 4 The diagram shown is a schematic diagram of the outer structure of an embodiment of this application.

[0028] Figure label:

[0029] 01-Cable, 1-Inner layer, 12-Rubber support ring, 121-Heat conduction groove, 2-Intermediate layer, 21-First layer, 22-Second layer, 3-Outer layer, 100-Open structure, 110-Sealing part. Detailed Implementation

[0030] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0031] The following description of at least one exemplary embodiment is merely illustrative and is not intended to limit the scope of this application or its application or use.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0033] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0034] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0036] Figure 1 The figure shown is a schematic cross-sectional view of the cable protection sleeve provided in an embodiment of this application. Figure 2 The diagram shown is a schematic representation of the internal structure of the installation cavity according to an embodiment of this application. Figure 3 The diagram shown is a schematic diagram of the internal structure of the installation cavity in an embodiment of this application.

[0037] See Figures 1 to 3 This application provides a cable protection sleeve, including an inner layer 1, a middle layer 2, and an outer layer 3 arranged sequentially from the inside to the outside. The inner layer 1 encloses an installation cavity 11 for accommodating a cable 01. The middle layer 2 includes a first layer 21 and a second layer 22 arranged sequentially from the inside to the outside and fixedly connected. The first layer 21 is fixedly connected to the inner layer 1, and the second layer 22 is fixedly connected to the outer layer 3. The first layer 21 is made of glass fiber reinforced composite material, and the second layer 22 is a skeleton structure made of shape memory alloy material. The skeleton structure is embedded in the first layer 22 on the side close to the first layer 21, and the internal grid space on the side of the skeleton structure away from the first layer 21 is filled with magnetorheological elastomer. The inner layer 1 is sprayed onto the first layer. 21. A waterproof insulating layer on the surface facing away from the second layer 22; the outer layer 3 is made of modified polyurethane material and has a corrugated structure that is axially expandable and radially bendable; the cable protection sleeve extends along its axis and is radially opened to the opening structure 100 of the installation cavity 11. Both sides of the opening structure 100 are provided with sealing parts 110. The sealing parts 110 on both sides of the opening structure 100 can be adapted to abut against each other so that the installation cavity 11 of the inner layer 1 is sealed and isolated from the outside; the sealing parts 110 are made of rubber material; the inner wall surface of the inner layer 1 is provided with a plurality of rubber support rings 12 that are spaced apart along the axial direction of the cable protection sleeve. The rubber support rings 12 protrude from the inner wall surface of the inner layer 1, and each rubber support ring 12 is provided with a heat conduction groove 121.

[0038] In practical implementation, the diameter of the cable protection sleeve is determined according to the specifications of the cable 01 to be accommodated. As a preferred embodiment, the diameter of the cable protection sleeve is set to 1.5 to 2.5 times the diameter of the cable 01. By controlling this diameter ratio, it is possible to ensure that the cable 01 can be smoothly inserted into the installation cavity 11, avoiding installation difficulties or excessive pressure on the cable 01 due to an excessively small inner diameter, while also preventing the cable 01 from swaying inside the tube due to an excessively large inner diameter, thus ensuring effective constraint and stable support for the cable 01.

[0039] The spacing between adjacent rubber support rings 12 is set according to the specifications of the cable 01 and the sleeve. In a preferred embodiment, the distance between adjacent rubber support rings 12 is 50 cm. This spacing provides uniform and continuous support points in the axial direction of the cable 01, effectively preventing excessive sag or bending of the cable 01 due to gravity, thus ensuring the stability of the cable 01 during long-distance laying. Simultaneously, this spacing avoids material waste and increased threading resistance caused by excessively dense arrangement of rubber support rings 12.

[0040] The cable protection sleeve provided in this embodiment is used as follows:

[0041] According to the cable 01 installation requirements, the construction personnel pull the protective sleeve outward along the opening structure 100. Utilizing the deformation characteristics of the opening structure 100, the opening is opened, and the cable 01 to be protected is directly inserted into the installation cavity 11 of the inner layer 1 through the opening structure 100. After the protective sleeve is released, the sealing parts 110 on both sides of the opening structure 100 are reset and adapted to abut, forming a sealed and fitted surface, which isolates the installation cavity 11 from the external environment, completing the rapid assembly of the cable 01.

[0042] In this embodiment, the inner layer 1 is a waterproof and insulating layer that directly surrounds and forms the cable 01 installation cavity 11, which can provide basic waterproof, dustproof and insulating protection for the cable 01 contained therein. In conjunction with the rubber sealing part 110 at the axial opening structure 100, the sealing part 110 can achieve simple physical isolation between the installation cavity 11 and the outside after fitting and abutting, avoiding a large amount of external moisture and dust from invading and damaging the cable 01, while eliminating safety hazards such as cable 01 leakage and short circuit. The intermediate layer 2 is a combination structure of a first layer 21 made of glass fiber reinforced composite material and a second layer 22 made of shape memory alloy mesh skeleton. The first layer 21, relying on the characteristics of glass fiber reinforced composite material, provides basic tensile and compressive protection for the sleeve, effectively resisting external conventional tensile and compressive forces. The shape memory alloy mesh skeleton of the second layer 22, relying on its own rigidity, provides overall deformation resistance support for the sleeve. The side of the skeleton close to the first layer 21 is embedded in the first layer 21, with strong connection stability, which can effectively prevent external compression and collision from causing the sleeve to deform and compress the internal cable 01. At the same time, the mesh space of the mesh skeleton away from the first layer 21 is filled with magnetorheological elastomer, which can further buffer external impact force and improve the impact resistance and shock absorption performance of the sleeve, thus providing a double-strengthened structural protection effect. The outer layer 3 uses a corrugated structure made of modified polyurethane material, which is in direct contact with the external environment. Relying on the high wear resistance of modified polyurethane and the scratch-resistant properties of the corrugated structure, it can effectively block minor external abrasion and scratch damage, improving the weather resistance and service life of the sleeve. At the same time, the corrugated structure has good flexibility, which can flexibly adapt to the small-angle bending requirements during the cable 01 laying process, taking into account both structural protection and laying flexibility, and adapting to different laying scenarios.

[0043] In addition, rubber support rings 12 protruding from the inner wall are provided at intervals on the inner wall of the inner layer 1. After the cable 01 passes through the installation cavity 11, the rubber support rings 12 can provide flexible support for the cable 01, so that a gap is formed between the outer wall of the cable 01 and the inner wall of the inner layer 1, avoiding friction damage caused by direct contact between the cable 01 and the inner wall of the inner layer 1. At the same time, the heat conduction grooves 121 opened on the rubber support rings 12 can realize air circulation in the gap, assisting the heat dissipation of the cable 01 during operation, avoiding heat accumulation that affects the normal operation of the cable 01, and realizing the dual function of cable 01 protection and heat dissipation.

[0044] The sleeve extends along the axial direction, and the axial opening structure 100 design enables the rapid installation and removal of cable 01. Unlike existing structures, cable 01 does not need to be dragged and threaded axially, which improves the ease of operation for cable 01 installation and subsequent maintenance.

[0045] In summary, the cable protection sleeve provided in this embodiment has fixed connections between each layer, tight interlayer bonding, strong overall structural stability, and coordinated functional structures. It achieves all-round protection while taking into account ease of use and adaptability, and has a wide range of applications.

[0046] See also Figure 1 In some embodiments, there are multiple heat conduction grooves 121, which are evenly distributed circumferentially along the inner wall surface of the inner layer 1.

[0047] In this embodiment, by providing multiple heat-conducting grooves 121 evenly distributed circumferentially along the inner wall of the inner layer 1 on the rubber support ring 12, the contact area between the cable 01 and the rubber support ring 12 is reduced, thereby reducing the frictional resistance when the cable 01 is inserted and facilitating installation. At the same time, the evenly distributed heat-conducting grooves 121 can guide airflow, improve heat dissipation efficiency, avoid local overheating of the cable 01, and ensure long-term stable operation of the cable 01. In addition, the circumferentially evenly distributed structure makes the support force of the rubber support ring 12 on the cable 01 more balanced, preventing the cable 01 from shifting or vibrating due to uneven force, and further improving the protective performance of the protective sleeve on the cable 01.

[0048] In some embodiments, the outer layer 3 is made of a modified polyurethane material doped with nano-silica.

[0049] In this embodiment, the nano-reinforcing effect of nano-silica not only improves the surface hardness and wear resistance of the outer layer 3, resisting damage from construction site dust abrasion and hard object scratches, and extending its wear-resistant life, making it suitable for long-term wear-resistant protection under harsh working conditions; it also effectively blocks the degradation of polyurethane by ultraviolet rays and ozone, delaying the aging, embrittlement, and yellowing of the outer layer 3, and optimizes its high and low temperature resistance, allowing the outer layer 3 to maintain good flexibility and structural stability when temperatures fluctuate, avoiding low-temperature brittleness and high-temperature softening, and improving its weather resistance in outdoor working conditions; at the same time, it forms a stable composite structure with polyurethane, and in conjunction with the corrugated structure, it significantly enhances the tensile, tear, compression, and impact resistance of the outer layer 3, preventing permanent deformation or tearing, and strengthening the overall structural protection of the sleeve; and the uniform doping does not change the flexible matrix properties of polyurethane, so the outer layer 3 still retains good flexible bending ability, which can adapt to the multi-angle bending requirements of cable laying, achieving a balance between strength and flexibility.

[0050] In some embodiments, the corrugation height of the outer layer 3 is 3mm. This avoids the problems of insufficient wear-resistant surface and poor impact-absorbing effect caused by too low a corrugation height, while also preventing the defects of easy structural damage and easy accumulation of sand and dust caused by too high a corrugation height. It can effectively disperse external impact force, reduce contact surface friction, and achieve the optimal balance between wear resistance and impact resistance.

[0051] See Figure 2 In some embodiments, the skeleton structure of the second layer 22 is a rhomboid mesh.

[0052] In this embodiment, the rhombic mesh provides the second layer 22 with good spatial stability. With the same amount of material, its radial compression resistance and axial tensile resistance are superior to square and circular mesh structures. Moreover, the hollow ratio is moderate, which significantly reduces the weight of the skeleton while ensuring structural strength and enhancing the lightweight characteristics of the sleeve. This structure can also evenly distribute external extrusion and impact forces along the four sides of the rhombus to the entire skeleton, avoiding deformation and fracture caused by local stress concentration. This makes the stress distribution of the sleeve more uniform when subjected to external loads, improving the overall deformation resistance. At the same time, the good deformability and recovery ability of the rhombic mesh are highly compatible with the shape memory characteristics of shape memory alloys. It can adaptively adjust with the deformation of the alloy and quickly recover after deformation, ensuring the support performance of the skeleton and avoiding the problem of other rigid mesh structures being unable to recover after deformation. In addition, its regular mesh space and uniform gaps can not only make the magnetorheological elastomer uniformly filled, avoiding inconsistent local damping characteristics, ensuring uniform energy absorption throughout the entire area under vibration conditions and maximizing the anti-vibration buffering effect, but also ensure that heat can pass through smoothly without affecting the thermal conductivity and heat dissipation performance of the intermediate layer 2.

[0053] In some embodiments, the inner layer 1 has a thickness of 2 mm and a Shore hardness of 60 ± 5 HA.

[0054] In this embodiment, the 2mm thickness of the inner layer ensures the protective performance of the waterproof insulation coating, preventing moisture and dust penetration, while avoiding increased weight and reduced flexibility of the sleeve. A Shore hardness of 60±5HA, suitable for rubber / silicone materials, gives the inner layer both flexibility and abrasion resistance. This provides flexible protection against damage from hard contact with the cable while preventing its own wear and deformation, achieving a balance between protection and abrasion resistance. This combination of thickness and hardness ensures a strong bond between the inner and middle layers, preventing interlayer detachment and buffering the contact stress between the middle layer and the cable, avoiding damage from rigid transmission. Simultaneously, the 2mm thickness controls the weight of the inner layer, aligning with the lightweight design of the sleeve, and the hardness and thickness meet the elastic contact requirements of the opening sealing structure, without affecting the sealing effect and ensuring the integrity of the overall sealing protection.

[0055] In some embodiments, the inner layer 1 contains 95% to 98% silicone by mass percentage, 2% to 5% graphene thermal conductive particles by mass percentage, and the sum of the mass percentages of silicone and graphene thermal conductive particles is 100%.

[0056] In this embodiment, the inner layer uses a ratio of 95%–98% silicone and 2%–5% graphene thermally conductive particles. This doping ratio allows the graphene to form a continuous thermally conductive network within the silicone matrix, significantly improving the thermal conductivity of the inner layer. This, combined with the multi-layer heat dissipation structure, support gaps, and flow channels, creates a synergistic heat dissipation process across the entire chain, overcoming the poor thermal conductivity of silicone. The high silicone content ensures the inner layer retains excellent waterproof, moisture-proof, and electrical insulation properties. The uniform doping of graphene does not damage the insulating matrix and avoids insulation degradation caused by excessive thermally conductive particles, thus balancing the core requirements of thermal conductivity and insulation.

[0057] See Figure 4 In some embodiments, the two side walls of the opening structure 100 are arranged in a toothed, staggered configuration along the extension direction of the cable protection sleeve.

[0058] In this embodiment, the toothed interlocking structure causes the two side walls of the opening structure 100 to form an interlocking groove when closed, increasing the contact area and engagement depth. When the sleeve is subjected to external force, bending or vibration, it is not easy to accidentally open in the radial or circumferential direction, effectively improving the closing stability and anti-disengagement effect of the opening structure 100.

[0059] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cable protection sleeve, characterized in that, It includes an inner layer (1), a middle layer (2) and an outer layer (3) arranged sequentially from the inside to the outside, wherein the inner layer (1) encloses and forms an installation cavity (11) for accommodating cables. The intermediate layer (2) includes a first layer (21) and a second layer (22) arranged sequentially from the inside out and fixedly connected. The first layer (21) is fixedly connected to the inner layer (1), and the second layer (22) is fixedly connected to the outer layer (3). The first layer (21) is made of glass fiber reinforced composite material, and the second layer (22) is a mesh skeleton structure made of shape memory alloy material. The mesh skeleton structure is embedded in the first layer (21) on the side close to the first layer (21), and the internal mesh space on the side of the mesh skeleton structure away from the first layer (21) is filled with magnetorheological elastomer. The inner layer (1) is a waterproof insulating layer sprayed on the surface of the first layer (21) away from the second layer (22); The outer layer (3) is made of modified polyurethane material and the outer layer (3) has a corrugated structure; The cable protection sleeve extends axially and radially to the opening structure (100) of the mounting cavity. Both sides of the opening structure (100) are provided with sealing parts (110). The sealing parts (110) on both sides of the opening structure (100) are adapted to abut against each other to seal and isolate the mounting cavity (11) of the inner layer (1) from the outside. The sealing parts (110) are made of rubber. The inner wall of the inner layer (1) is provided with a plurality of rubber support rings (12) spaced apart along the axial direction of the cable protection sleeve. The rubber support rings (12) protrude from the inner wall of the inner layer (1), and each rubber support ring (12) is provided with a heat conduction groove (121).

2. The cable protection conduit of claim 1, wherein, The number of heat-conducting grooves (121) is multiple, and they are evenly distributed circumferentially along the inner wall surface of the inner layer (1).

3. The cable protection conduit of claim 1, wherein, The outer layer (3) is made of modified polyurethane material doped with nano-silica.

4. The cable protection conduit of claim 1, wherein, The corrugation height of the corrugated structure of the outer layer (3) is 3 mm.

5. The cable protection conduit of claim 1, wherein, The second layer (22) has a rhomboid mesh structure.

6. The cable protection conduit of claim 1, wherein, The inner layer (1) has a thickness of 2 mm and a Shore hardness of 60 ± 5 HA.

7. A cable protection conduit according to claim 6, characterised in that, The inner layer (1) contains 95% to 98% silicone and 2% to 5% graphene thermal conductive particles by mass percentage, and the sum of the mass percentages of the silicone and graphene thermal conductive particles is 100%.

8. The cable protection conduit of claim 6, wherein, Along the extension direction of the cable protection sleeve, the two side walls of the opening structure (100) are arranged in a toothed, interlocking manner.

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