Corrosion-resistant wear-resistant cable

Abstract

The utility model discloses a corrosion-resistant wear-resistant cable, which belongs to the technical field of cables and comprises a cable group used for realizing a stable transmission foundation of current and signals, and a plurality of rubber support ring groups used for stress absorption protection are arranged on the periphery of the cable group. Honeycomb frameworks used for achieving a rigid supporting structure are installed on the peripheries of the multiple rubber supporting ring sets, anti-impact rings used for resisting external point-shaped impact are installed at the ends of the honeycomb frameworks, and buffering isolation layers used for protecting the rubber supporting ring sets and the honeycomb frameworks are installed between the honeycomb frameworks and the rubber supporting ring sets. According to the corrosion-resistant wear-resistant cable, the impact damage rate is reduced, the integrity of a protection system is ensured, the phenomena of cracking and aging of the sheath are not easy to occur, the wear resistance is improved, the operation and maintenance cost is reduced, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, and in particular to a corrosion-resistant and wear-resistant cable. Background Technology

[0002] In chemical workshops, underground mines, and offshore platforms, cables must withstand multiple challenges over long periods, including acid and alkali corrosion, mechanical friction, and high and low temperature impacts. Most conventional cables use ordinary PVC sheaths, which, while providing basic insulation, have weak impact resistance. This can directly cause multi-layered structural damage, compromising the integrity of the protective system and leading to sheath cracking and aging. Furthermore, their insufficient abrasion resistance necessitates frequent replacements, increasing maintenance costs and potentially creating safety hazards.

[0003] A search revealed Chinese patent documents (authorization announcement number CN209591617U). This utility model relates to the field of cable technology, and in particular to a corrosion-resistant and wear-resistant cable. This corrosion-resistant and wear-resistant cable, through the addition of a wear-resistant layer, increases the cable's wear resistance. Compared to traditional wear-resistant cables, it reduces the likelihood of small, sharp solid particles entering the grooves. While this device meets basic usage requirements, its impact resistance is weak, directly causing multi-layered structural damage, compromising the integrity of the protective system, and making it prone to sheath cracking and aging. Furthermore, its insufficient wear resistance and frequent replacement not only increase maintenance costs but may also pose safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant and wear-resistant cable to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant and wear-resistant cable, comprising a cable assembly for achieving stable current and signal transmission, wherein the outer periphery of the cable assembly is provided with multiple rubber support ring assemblies for stress absorption and protection;

[0006] The outer periphery of the plurality of rubber support ring assemblies is fitted with a honeycomb skeleton for achieving a rigid support structure. The ends of the honeycomb skeleton are fitted with impact-resistant rings for resisting external point impacts. A buffer isolation layer for protecting the rubber support ring assemblies and the honeycomb skeleton is installed between the honeycomb skeleton and the rubber support ring assemblies.

[0007] Preferably, the surfaces of the impact-resistant ring and the buffer isolation layer are provided with connecting holes for limiting the position, and the interior of the connecting holes is connected with reinforcing ribs for strengthening the axial tensile and bending resistance of the rubber support ring assembly and the honeycomb skeleton.

[0008] Preferably, the outer periphery of the honeycomb skeleton and the buffer isolation layer is fitted with an external protective layer to resist external wear and corrosion.

[0009] Preferably, the surface of the outer protective layer is provided with multiple reinforcing grooves to enhance the overall resistance to compression and impact of the cable.

[0010] Preferably, the surfaces of the plurality of reinforcing ring grooves are provided with chamfers to prevent stress concentration at the edges of the protective layer due to the right-angle structure.

[0011] Preferably, the space between the honeycomb skeleton and the rubber support ring assembly is filled with closed-cell EVA foam.

[0012] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0013] This corrosion-resistant and wear-resistant cable benefits from the structure of its impact-resistant rings. When faced with point impacts such as falling heavy objects or sharp impacts, the impact-resistant rings at the ends of the honeycomb skeleton preferentially contact the impact source. The thickened structure disperses local stress throughout the honeycomb skeleton, preventing energy concentration from damaging the internal structure. The reinforcing grooves on the surface of the outer protective layer enhance the outer rigidity, forming an "internal and external" anti-compression and anti-impact system with the inner honeycomb skeleton and impact-resistant rings, enabling the cable to withstand 500 kg / m. 2 The deformation under static pressure is ≤12%, the impact damage rate is reduced, the integrity of the protection system is ensured, the sheath is less prone to cracking and aging, and the wear resistance is improved, reducing operation and maintenance costs and reducing safety hazards.

[0014] This corrosion-resistant and wear-resistant cable benefits from the structure of the rubber support ring assembly. When the cable is bent, twisted, or vibrates, the rubber support ring assembly first absorbs radial compression and axial tensile stress through elastic deformation, preventing dynamic stress from acting directly on the cable assembly and preventing cracking of the inner core insulation layer and conductor breakage. At the same time, the closed-cell EVA foam between the honeycomb skeleton and the rubber support ring assembly fills the tiny gaps, further weakening residual stress and improving the buffering effect compared to a single support structure. The buffer isolation layer isolates the rigid honeycomb skeleton from the elastic rubber support ring assembly, reducing friction and wear between the two and extending the service life of the components. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 5 This utility model Figure 3 Enlarged view of point B in the middle.

[0021] Explanation of reference numerals in the attached figures:

[0022] In the diagram: 1. Cable assembly; 2. Rubber support ring assembly; 3. Honeycomb skeleton; 301. Impact-resistant ring; 302. Reinforcing rib; 303. Buffer isolation layer; 304. Connection hole; 4. External protective layer; 401. Reinforcing ring groove; 402. Chamfer. Detailed Implementation

[0023] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0024] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0025] like Figures 1 to 5 The diagram shows a corrosion-resistant and wear-resistant cable, comprising a cable assembly 1 for stable current and signal transmission. Multiple rubber support rings 2 are arranged around the outer periphery of the cable assembly 1 for stress absorption and protection. The cable assembly 1, as the core, directly achieves stable current and signal transmission and is the functional foundation of the entire cable. When the cable is bent, twisted, or experiences slight vibration during laying or use, the multiple rubber support rings 2 around its periphery absorb radial compression and axial tensile stress through their own elastic deformation, preventing these dynamic stresses from directly acting on the cable assembly 1 and preventing cracking of the insulation layer of the inner core or conductor breakage. Simultaneously, the rubber support rings 2 also provide radial positioning for the cable assembly 1, preventing it from shifting in subsequent structures.

[0026] Multiple rubber support ring assemblies 2 are fitted with honeycomb skeletons 3 on their outer periphery to achieve a rigid support structure. The honeycomb skeletons 3 on the outer periphery of the rubber support ring assemblies 2 provide rigid support, building a "mechanical skeleton" for the entire cable to resist external conventional compressive loads. When the cable is subjected to point impacts such as falling heavy objects or being struck by sharp objects, the impact-resistant rings 301 at the ends of the honeycomb skeletons 3 will preferentially contact the impact source and disperse the local impact stress to the entire honeycomb skeletons 3 through their own thickened structure, avoiding the impact energy from concentrating and damaging the internal rubber support ring assemblies 2 and cable assemblies 1. At the same time, the buffer isolation layer 303 between the honeycomb skeletons 3 and the rubber support ring assemblies 2 will further buffer the friction and compression between the two, reducing the wear of the elastic rubber support ring assemblies 2 by the rigid honeycomb skeletons 3, and also preventing the honeycomb skeletons 3 from being damaged by long-term compression deformation of the rubber support ring assemblies 2. The ends of the honeycomb skeletons 3 are fitted with impact-resistant rings 301 to resist external point impacts, and the buffer isolation layer 303 between the honeycomb skeletons 3 and the rubber support ring assemblies 2 is installed to protect the rubber support ring assemblies 2 and the honeycomb skeletons 3.

[0027] Both the impact-resistant ring 301 and the buffer isolation layer 303 have connection holes 304 for limiting their position. The connection holes 304 are connected to reinforcing ribs 302 to enhance the axial tensile and bending resistance of the rubber support ring assembly 2 and the honeycomb skeleton 3. The connection holes 304 on the surfaces of the impact-resistant ring 301 and the buffer isolation layer 303 provide limiting and fixing points for the reinforcing ribs 302. After the reinforcing ribs 302 pass through the connection holes 304, they connect the rubber support ring assembly 2 and the honeycomb skeleton 3 in series along the cable axis to form a whole, which greatly enhances the axial tensile resistance (avoiding axial breakage during long-distance cable laying) and bending resistance (reducing structural deformation during bending). The closed-cell EVA foam filling between the honeycomb skeleton 3 and the rubber support ring assembly 2 fills the tiny gaps between them, further improving the buffering effect, while preventing moisture, dust and other impurities from penetrating into the gaps and causing corrosion.

[0028] An outer protective layer 4 is installed around the honeycomb skeleton 3 and the buffer isolation layer 303 to resist external wear and corrosion. The surface of the outer protective layer 4 is provided with multiple reinforcing grooves 401 to enhance the overall resistance to compression and impact of the cable. The surfaces of the multiple reinforcing grooves 401 are provided with chamfers 402 to prevent stress concentration at the edges of the protective layer due to right-angle structures. As the outermost barrier, the outer protective layer 4 around the honeycomb skeleton 3 and the buffer isolation layer 303 is in direct contact with the external environment. It resists ground friction and chemical corrosion through its own wear-resistant and corrosion-resistant properties, achieving… The cable features dual core protection: corrosion resistance and wear resistance. Multiple reinforcing grooves 401 on the surface of the outer protective layer 4 enhance the circumferential rigidity of the outer protective layer 4 through the ring structure. Together with the inner honeycomb skeleton 3 and the impact-resistant ring 301, they form an "internal and external synergistic anti-compression and anti-impact" structure, improving the overall cable's ability to resist uniform compression and local impact. The chamfer 402 on the surface of the reinforcing groove 401 transforms the original right-angled edge into a rounded transition, preventing stress concentration at the edge of the outer protective layer 4 due to the right-angled structure when the cable bends or collides. This prevents the protective layer from cracking and extends the life of the outer protective layer.

[0029] Closed-cell EVA foam is filled between the honeycomb skeleton 3 and the rubber support ring assembly 2. To ensure the long-term stable operation of the corrosion-resistant and wear-resistant cable, a protection system needs to be established from four core dimensions: environmental adaptability, maintenance, material control, and component filling. Based on the functional characteristics of each cable structure (cable assembly 1, rubber support ring assembly 2, etc.), various influencing factors are specifically mitigated. Specific measures are as follows:

[0030] In terms of environmental impact mitigation, targeted protection is required based on the usage scenario: When facing corrosive environments such as chemical industrial zones and marine environments, the wear-resistant and corrosion-resistant properties of the outer protective layer 4 (such as modified CPU material) should be used as the first line of defense. When laying the protective layer, areas with liquid accumulation and acid / alkali leakage points should be avoided. If the protective layer needs to be buried, anti-corrosion geotextile should be wrapped around the outer side of the outer protective layer 4 to prevent corrosion from soil salts and microorganisms. At the same time, corrosive liquids accumulated in the reinforced annular groove 401 should be cleaned regularly, and its annular structure should be used to guide the liquid to drain quickly, avoiding localized corrosion caused by liquid accumulation at the chamfer 402. For scenarios with frequent mechanical impacts (such as mines and ports), it is necessary to rely on the synergistic structure of "impact-resistant ring 301 + honeycomb skeleton 3 + reinforcing ring groove 401". The laying path should avoid areas crushed by heavy objects and areas where sharp objects are piled up. If necessary, a metal protective sleeve should be installed on the outside of the cable to further disperse the impact energy and prevent the impact-resistant ring 301 from failing due to excessive impact. If the cable is used in environments with alternating high and low temperatures (such as outdoors and cold chain), it is necessary to ensure that the rubber support ring group 2 is made of heat-resistant HNBR material (-40℃~150℃). The closed-cell EVA foam must be treated with heat resistance modification to prevent low-temperature brittleness and high-temperature softening that could lead to buffer failure. At the same time, it is necessary to avoid frequent bending of the cable at extreme temperatures and protect the insulation layer of the inner core of the cable group 1 from thermal expansion and contraction cracking.

[0031] Maintenance and upkeep require a regular control mechanism: First, visual and performance inspections should be conducted. Weekly checks should be performed on the outer protective layer 4 for wear and cracks (paying particular attention to the connection between the reinforcing groove 401 and the chamfer 402). If local wear depth exceeds 0.3mm, it should be repaired promptly with wear-resistant and anti-corrosion coating. Monthly insulation performance of cable assembly 1 should be tested using an insulation resistance tester to ensure insulation resistance ≥10 ohms. 16 Ω·cm, to avoid transmission problems caused by insulation aging; check the fit between the connection hole 304 and the reinforcing rib 302 quarterly, and if loosening occurs, refill with high-temperature resistant sealant to prevent impurities from seeping into the gaps and corroding the buffer isolation layer 303. Secondly, cleaning and maintenance are essential. For oil stains, acid and alkali impurities adhering to the surface of the outer protective layer 4, wipe with a neutral detergent (avoid using strong solvents that could damage the protective layer), paying particular attention to cleaning the edge gaps of the closed-cell EVA foam-filled area to prevent impurities from accumulating and accelerating the aging of the rubber support ring assembly 2. Finally, regarding laying and storage specifications, the bending radius of the cable during laying must be ≥7 times the cable's outer diameter to avoid excessive bending that could cause the reinforcing rib 302 to break and the rubber support ring assembly 2 to deform; during storage, it must be coiled on a dedicated cable reel to avoid contact with sharp objects and prevent damage to the outer protective layer 4 and the impact-resistant ring 301.

[0032] Material control must be implemented throughout the entire process, from selection and production to testing. Core components require clearly defined material standards. For example, the conductor of cable assembly 1 should be nickel-plated oxygen-free copper (nickel layer thickness ≥ 5μm, salt spray resistance ≥ 1000h), and the insulation layer should use cross-linked polyethylene (XLPE) with added antioxidants to improve aging resistance. Rubber support ring assembly 2 should use hydrogenated nitrile butadiene rubber (HNBR) to ensure an elastic recovery rate ≥ 90% and an oil resistance rating of ISO 1817 standard level 3. The outer protective layer 4 should use modified cast polyurethane (CPU) with 15% silicon carbide particles to achieve a wear resistance coefficient of GB / T10806 standard level T4. Material compatibility must be controlled during production. For example, closed-cell EVA foam and the buffer isolation layer 303 (modified CPE) must undergo compatibility testing to avoid long-term contact leading to chemical reactions and material degradation. Filler materials (such as EVA foam) must have their density tested (≥ 0.9 g / cm³). 3 A closed-cell ratio (≥95%) is required to prevent compression deformation due to insufficient density, thus preserving cushioning and sealing functions. Finished products must pass stringent testing, such as salt spray resistance (≥1500h no rust) and abrasion resistance (drag for 1000m, abrasion ≤20mm). 3 Impact testing (no structural damage after 10J energy impact) ensures that the material performance meets the standards.

[0033] The filling between each component must ensure integrity and sealing: The closed-cell EVA foam between the honeycomb skeleton 3 and the rubber support ring group 2 must be filled using a high-pressure injection molding process to ensure a filling rate of over 98%, free of air bubbles and gaps, preventing moisture from seeping in and corroding cable assembly 1. If local voids are found after filling, weather-resistant silicone sealant must be injected to fill them and prevent impurity accumulation. The gaps between the wire cores inside cable assembly 1 must be supplemented with flame-retardant fiberglass rope containing anti-corrosion lubricating grease, with a filling rate ≥95%, reducing friction and wear between the wire cores and preventing the penetration of internal corrosive media. The lubricating grease must be a type resistant to temperatures from -40℃ to 120℃ and resistant to acids and alkalis to prevent high-temperature loss or low-temperature solidification. The gap between the connecting hole 304 and the reinforcing rib 302 needs to be filled with high-temperature resistant epoxy sealant (temperature resistance 200℃). After curing, it forms a sealing layer to prevent rainwater and dust from entering the honeycomb skeleton 3 through the gap, which could lead to corrosion of the reinforcing rib 302 and aging of the buffer isolation layer 303. At the same time, the connection gap between the impact ring 301 and the honeycomb skeleton 3 needs to be coated with corrosion-resistant sealant to enhance the overall sealing performance and further improve corrosion resistance. Through the above multi-dimensional protective measures, the negative impacts of the environment, maintenance, materials, and filling can be effectively avoided, ensuring the long-term stable operation of the cable.

[0034] Working principle

[0035] When using this corrosion-resistant and wear-resistant cable, cable group 1 is the core, responsible for the stable transmission of current and signals, laying the foundation for the overall function. When the cable is bent, twisted, or vibrated, the outer rubber support ring group 2 absorbs radial compression and axial tensile stress through elastic deformation, preventing stress damage to the cable group 1 and fixing the position of the cable group 1 to prevent displacement. The honeycomb skeleton 3 outside the rubber support ring group 2 provides rigid support to resist conventional compression. If a point impact occurs, the impact-resistant ring 301 at the end of the honeycomb skeleton 3 will preferentially contact the impact source to disperse the stress and protect the internal structure. The buffer isolation layer 303 reduces frictional damage between the honeycomb skeleton 3 and the rubber support ring group 2. The connecting hole 304 between the impact-resistant ring 301 and the buffer isolation layer 303 fixes the reinforcing rib 302. The reinforcing rib 302 connects the rubber support ring group 2 and the honeycomb skeleton 3 in series to enhance axial tensile and bending resistance. The closed-cell EVA foam filling gap between the two enhances buffering and corrosion prevention. The outermost outer protective layer 4 resists wear and corrosion. The reinforcing ring groove 401 on its surface enhances circumferential rigidity and works with the inner layer to resist compression and impact. The chamfer 402 prevents stress concentration and cracking at the edge of the protective layer and extends service life.

[0036] It should be noted that in this article, relational terms such as one and two are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant and wear-resistant cable, comprising a cable assembly (1) for achieving stable transmission of current and signals, characterized in that: The outer periphery of the cable assembly (1) is provided with multiple rubber support ring assemblies (2) for stress absorption protection; A honeycomb skeleton (3) for achieving a rigid support structure is installed on the outer periphery of the plurality of rubber support ring assemblies (2). An impact-resistant ring (301) for resisting external point impacts is installed at the end of the honeycomb skeleton (3). A buffer isolation layer (303) for protecting the rubber support ring assemblies (2) and the honeycomb skeleton (3) is installed between the honeycomb skeleton (3) and the rubber support ring assemblies (2).

2. The corrosion-resistant and wear-resistant cable according to claim 1, characterized in that: The surfaces of the impact-resistant ring (301) and the buffer isolation layer (303) are provided with connection holes (304) for limiting the position. The inside of the connection holes (304) is connected to reinforcing ribs (302) for strengthening the axial tensile and bending resistance of the rubber support ring assembly (2) and the honeycomb skeleton (3).

3. The corrosion-resistant and wear-resistant cable according to claim 1, characterized in that: The outer periphery of the honeycomb skeleton (3) and the buffer isolation layer (303) is equipped with an external protective layer (4) to resist external wear and corrosion.

4. The corrosion-resistant and wear-resistant cable according to claim 3, characterized in that: The surface of the outer protective layer (4) is provided with multiple reinforcing annular grooves (401) to enhance the overall resistance to compression and impact of the cable.

5. The corrosion-resistant and wear-resistant cable according to claim 4, characterized in that: The surfaces of the plurality of reinforcing ring grooves (401) are provided with chamfers (402) to prevent stress concentration at the edges of the protective layer due to the right-angle structure.

6. The corrosion-resistant and wear-resistant cable according to claim 1, characterized in that: The honeycomb skeleton (3) and the rubber support ring group (2) are filled with closed-cell EVA foam.

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