Highly abrasion resistant corrosion resistant communication cable

Abstract

The utility model discloses a kind of high wear-resistant anticorrosive communication optical cable, including cable core assembly, buffer anticorrosive layer, reinforcing protective layer and wear-resistant anticorrosive outer layer;The cable core assembly is located in the center of optical cable, from inside to outside, buffer anticorrosive layer, reinforcing protective layer and wear-resistant anticorrosive outer layer are successively sleeved;The cable core assembly includes central reinforcing member, optical fiber thimble and water-blocking filling paste;The buffer anticorrosive layer includes inner buffer sleeve, anticorrosive isolation film and elastic buffer piece;The reinforcing protective layer includes metal armor net, aramid reinforcing yarn and outer buffer sleeve;The wear-resistant anticorrosive outer layer includes wear-resistant base cover, silicon carbide wear-resistant particle and polyurea anticorrosive coating;The utility model is through multilayer cooperative protection structure and innovation design, realize all-around wear-resistant, depth anticorrosive effect, improve optical cable overall strength and impact resistance ability simultaneously, prolong service life, adapt to various harsh application scenarios.

Description

Technical Field

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

[0002] Optical cables, as the core carrier of optical signal transmission, are widely used in outdoor aerial, direct burial, pipeline laying, and harsh industrial environments. Current technologies typically enhance the protective performance of optical cables by adding double sheaths or wear-resistant fiber layers and anti-corrosion coatings. However, these methods still have several shortcomings in practical applications: First, the wear-resistant structural design is often simplistic, using a planar sheath combined with a fiber layer. Under the influence of friction, compression, and long-term outdoor wear during laying, localized damage can easily occur, leading to the intrusion of corrosive media. Second, corrosion resistance is limited to surface protection, lacking comprehensive anti-corrosion design for the internal structure. When the outer sheath is damaged, corrosive media can quickly penetrate into the cable core, causing fiber damage. Third, the existing optical cables have poor synergy between buffering and reinforcement structures. When subjected to external impacts or temperature changes, micro-bending losses are easily generated, reducing overall structural stability and shortening service life.

[0003] For example, the invention patent with authorization announcement number CN 114967014B discloses a wear-resistant and corrosion-resistant optical cable, which achieves protection through an inner sheath, a wear-resistant fiber layer, an outer sheath, and an anti-corrosion coating. However, the wear-resistant fiber layer has a planar winding structure, which has weak resistance to local wear, and the reinforcing parts are not treated with anti-corrosion, so the reinforcing parts are prone to rust and breakage after long-term use. The utility model patent with authorization announcement number CN 208654386U uses an inner reinforcing mesh layer, an outer reinforcing mesh layer, and an elastic rubber layer to improve strength, but the anti-corrosion relies only on the outer protective layer, which has insufficient protection depth and is prone to failure in acidic and alkaline environments.

[0004] Therefore, there is an urgent need for a communication optical cable with a reasonable structural design, more comprehensive wear and corrosion resistance, and stronger stability to meet the needs of use in complex environments. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a high wear-resistant and corrosion-resistant communication optical cable. Through a multi-layered collaborative protection structure and innovative design, it achieves all-round wear resistance and deep corrosion protection, while improving the overall strength and impact resistance of the optical cable, extending its service life, and adapting to various harsh application scenarios.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high wear-resistant and corrosion-resistant communication optical cable includes a cable core assembly, a buffer anti-corrosion layer, a reinforced protective layer, and a wear-resistant and corrosion-resistant outer layer; the cable core assembly is located at the center of the optical cable, and the buffer anti-corrosion layer, the reinforced protective layer, and the wear-resistant and corrosion-resistant outer layer are sequentially fitted from the inside to the outside.

[0008] The cable core assembly includes a central reinforcing member, a fiber optic loose tube, and a water-blocking filler. The fiber optic loose tube is twisted around the central reinforcing member, and multiple colored optical fibers are provided inside the fiber optic loose tube. The water-blocking filler is filled inside the fiber optic loose tube, and the outer wall of the fiber optic loose tube is wrapped with a water-swelling water-blocking tape.

[0009] The buffer and anti-corrosion layer includes an inner buffer sleeve, an anti-corrosion isolation membrane, and an elastic buffer element; the inner buffer sleeve is fitted on the outside of the cable core assembly, and its inner wall is in contact with the outer wall of the optical fiber loose tube; the anti-corrosion isolation membrane is wrapped around the outside of the inner buffer sleeve, and the elastic buffer element is evenly disposed between the inner buffer sleeve and the anti-corrosion isolation membrane.

[0010] The reinforced protective layer includes a metal armor mesh, aramid reinforcing yarn, and an outer buffer sleeve; the metal armor mesh is woven from stainless steel wire and is fitted onto the outside of the anti-corrosion isolation membrane; the aramid reinforcing yarn is evenly twisted between the metal armor mesh and the outer buffer sleeve.

[0011] The wear-resistant and corrosion-resistant outer layer includes a wear-resistant base sleeve, silicon carbide wear-resistant particles, and a polyurea anti-corrosion coating. The wear-resistant base sleeve is fitted on the outside of the outer buffer sleeve. The outer wall of the wear-resistant base sleeve is provided with spiral wear-resistant protrusions. The silicon carbide wear-resistant particles are uniformly embedded in the surface and outer wall of the wear-resistant protrusions. The polyurea anti-corrosion coating is sprayed and formed on the outer surface of the wear-resistant base sleeve.

[0012] As a preferred embodiment, the central reinforcement is a glass fiber reinforced plastic rod with a polytetrafluoroethylene anti-corrosion coating on its outer surface.

[0013] As a preferred embodiment, the anti-corrosion isolation membrane is an aluminum-plastic composite membrane.

[0014] As a preferred embodiment, the elastic buffer is an annular rubber protrusion, which is integrally formed and connected with the inner buffer sleeve, and the interior of the elastic buffer has a hollow cavity filled with inert gas.

[0015] As a preferred embodiment, the outer buffer sleeve is made of low-smoke halogen-free polyolefin material.

[0016] As a preferred embodiment, the loose tube of the optical fiber is made of modified PBT material, and its inner wall is coated with a silicone grease lubricating layer; the colored optical fiber has a coating layer, which is a UV-curable acrylate resin, and the coating layer has a thickness of 250 μm.

[0017] As a preferred embodiment, the stainless steel wire used in the metal armored mesh has a diameter of 0.1-0.15 mm and a weaving density of not less than 90%. The surface of the metal armored mesh is coated with a zinc-nickel alloy anti-corrosion coating with a thickness of 0.05-0.1 mm.

[0018] As a preferred embodiment, the wear-resistant base sleeve is made of polyurethane material, the Shore hardness of the wear-resistant base sleeve is D65-D75, the height of the wear-resistant protrusion is 1.5-2.0mm, and the pitch of the wear-resistant protrusion is 50-80mm.

[0019] As a preferred embodiment, the number of elastic buffers is 4-6, which are evenly distributed along the circumference of the inner buffer sleeve, and the distance between two adjacent elastic buffers is 30-50mm.

[0020] As a preferred embodiment, the thickness of the polyurea anti-corrosion coating is 0.8-1.2 mm.

[0021] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0022] 1. Significantly improved wear resistance: This utility model adopts a multi-layer wear-resistant structure collaborative design. The outer wall of the wear-resistant base sleeve is provided with spiral wear-resistant protrusions, which increases the force-bearing area with the contact surface and reduces local wear. At the same time, silicon carbide wear-resistant particles are embedded in the surface of the protrusions and the outer wall, which have high hardness and strong wear resistance. It can effectively resist friction during the laying process and long-term outdoor wear. Compared with the traditional flat sheath structure, the wear resistance life is increased by more than 3 times.

[0023] 2. Comprehensive corrosion protection: Adopting an all-round anti-corrosion design, from the polytetrafluoroethylene coating of the central reinforcement and the zinc-nickel alloy coating of the metal armor mesh to the outer polyurea anti-corrosion coating, a multi-layer anti-corrosion barrier is formed. At the same time, the anti-corrosion isolation membrane can block the radial penetration of corrosive media, and the water-blocking filler and water-swellable water-blocking tape can prevent the longitudinal penetration of water. Even if the outer sheath is damaged, the cable core can still be protected by the inner anti-corrosion structure, making it suitable for harsh environments such as acid, alkali and humidity.

[0024] 3. Strong structural stability and impact resistance: The central reinforcing member and aramid reinforcing yarn work together to improve tensile strength, the metal armor mesh enhances compressive and impact resistance, and the elastic buffer and hollow cavity design can effectively absorb the stress generated by external impact and temperature changes, avoiding micro-bending loss of optical fiber.

[0025] 4. High practicality and easy to manufacture: The materials used in this utility model are all existing mature materials, the structure is reasonably designed, and it can be manufactured by conventional optical cable production equipment. The production process is simple, the cost is controllable, and it is suitable for various scenarios such as overhead, direct burial, and industrial plants, and has a wide range of application prospects.

[0026] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0027] Figure 1 This is a cross-sectional schematic diagram of a preferred embodiment of the present invention.

[0028] Explanation of reference numerals in the attached diagram:

[0029] 10. Cable core assembly; 11. Central reinforcement component

[0030] 111. Polytetrafluoroethylene anti-corrosion coating; 12. Fiber optic loose tube.

[0031] 121. Water-blocking strip; 122. Silicone grease lubrication layer

[0032] 13. Water-blocking filler paste 14. Colored optical fiber

[0033] 141. Colored optical fiber; 20. Buffer anti-corrosion layer

[0034] 21. Inner buffer sleeve; 22. Anti-corrosion isolation membrane

[0035] 23. Elastic buffer component; 231. Hollow cavity.

[0036] 30. Reinforced protective layer; 31. Metal armor mesh.

[0037] 311. Zinc-nickel alloy anti-corrosion coating; 32. Aramid reinforcing yarn.

[0038] 33. Outer cushioning sleeve; 40. Wear-resistant and corrosion-resistant outer layer

[0039] 41. Wear-resistant base sleeve; 411. Wear-resistant protrusion.

[0040] 42. Silicon carbide wear-resistant particles; 43. Polyurea anti-corrosion coating. Detailed Implementation

[0041] Please refer to Figure 1 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a cable core assembly 10, a buffer anti-corrosion layer 20, a reinforcing protective layer 30, and a wear-resistant and corrosion-resistant outer layer 40. The cable core assembly 10 is located at the center of the optical cable, and the buffer anti-corrosion layer 20, the reinforcing protective layer 30, and the wear-resistant and corrosion-resistant outer layer 40 are sequentially fitted from the inside out. Specifically:

[0042] The cable core assembly 10 includes a central reinforcing member 11, optical fiber loose tubes 12, and water-blocking filler 13. The optical fiber loose tubes 12 are twisted around the central reinforcing member 11, and multiple colored optical fibers 14 are disposed inside the loose tubes 12. The water-blocking filler 13 fills the loose tubes 12, and the outer wall of the loose tubes 12 is wrapped with a water-swellable water-blocking tape 121. In this embodiment, the central reinforcing member 11 is a glass fiber reinforced plastic rod, which is lightweight, has good structural strength, and its outer surface is coated with a polytetrafluoroethylene anti-corrosion coating 111, which can effectively protect the central reinforcing member 11 from corrosion. There are multiple optical fiber loose tubes 12; in this embodiment, there are four, but this is not a limitation. Multiple optical fiber loose tubes 12 are evenly twisted around the central reinforcing member 11. Each loose tube 12 contains water-blocking filler 13 and multiple colored optical fibers 14, and the outer wall of each loose tube 12 is wrapped with a water-swellable water-blocking tape 121. Furthermore, the loose tube 12 of the optical fiber is made of modified PBT material, and its inner wall is coated with a silicone grease lubricating layer 122. The colored optical fiber 14 has a coating layer 141, which is a UV-curable acrylate resin, and the coating layer 141 has a thickness of 250 μm.

[0043] The buffer and anti-corrosion layer 20 includes an inner buffer sleeve 21, an anti-corrosion isolation membrane 22, and an elastic buffer element 23. The inner buffer sleeve 21 is fitted onto the outside of the cable core assembly 10, and its inner wall is in contact with the outer wall of the optical fiber loose tube 12. The anti-corrosion isolation membrane 22 is wrapped around the outside of the inner buffer sleeve 21, and the elastic buffer element 23 is evenly disposed between the inner buffer sleeve 21 and the anti-corrosion isolation membrane 22. In this embodiment, the inner buffer sleeve 21 is made of rubber and has a thickness of 1.0 mm. The anti-corrosion isolation membrane 22 is an aluminum-plastic composite membrane with a thickness of 0.3 mm, which has a good anti-corrosion effect. The elastic buffer 23 is an annular rubber protrusion. The elastic buffer 23 is integrally formed and connected with the inner buffer sleeve 21. The interior of the elastic buffer 23 has a hollow cavity 231, which is filled with an inert gas (not shown in the figure). The inert gas can be nitrogen, carbon dioxide, etc., and is not limited thereto. Furthermore, there are 4-6 elastic buffers 23, which are evenly distributed along the circumference of the inner buffer sleeve 21. The distance between two adjacent elastic buffers 23 is 30-50mm to achieve a good buffering effect.

[0044] The reinforced protective layer 30 includes a metal armor mesh 31, aramid reinforcing yarn 32, and an outer buffer sleeve 33. The metal armor mesh 31 is woven from stainless steel wire and is fitted over the outside of the anti-corrosion isolation membrane 22. The aramid reinforcing yarn 32 is evenly twisted between the metal armor mesh 31 and the outer buffer sleeve 33. In this embodiment, the stainless steel wire used in the metal armor mesh 31 has a diameter of 0.1-0.15 mm and a weaving density of not less than 90%. The surface of the metal armor mesh 31 is coated with a zinc-nickel alloy anti-corrosion coating 311, the thickness of which is 0.05-0.1 mm. The twisting density of the aramid reinforcing yarn 32 is 10 strands / cm. The outer buffer sleeve 33 is made of low-smoke halogen-free polyolefin material and has a thickness of 1.2 mm.

[0045] The wear-resistant and corrosion-resistant outer layer 40 includes a wear-resistant base sleeve 41, silicon carbide wear-resistant particles 42, and a polyurea anti-corrosion coating 43. The wear-resistant base sleeve 41 is fitted onto the outside of the outer buffer sleeve 33. The outer wall of the wear-resistant base sleeve 41 has spiral wear-resistant protrusions 411. The silicon carbide wear-resistant particles 42 are uniformly embedded in the surface and outer wall of the wear-resistant protrusions 411. The polyurea anti-corrosion coating 43 is sprayed onto the outer surface of the wear-resistant base sleeve 41. In this embodiment, the wear-resistant base sleeve 41 is made of polyurethane material, and the Shore hardness of the wear-resistant base sleeve 41 is D65-D75. The height of the wear-resistant protrusions 411 is 1.5-2.0 mm, and the pitch of the wear-resistant protrusions 411 is 50-80 mm. The particle size of the silicon carbide wear-resistant particles 42 is 0.1-0.3 mm. The thickness of the polyurea anti-corrosion coating 43 is 0.8-1.2 mm.

[0046] Performance tests were conducted on the product's optical cable, and the results showed that: its abrasion resistance meets the GB / T 5470-2008 standard, and the sheath showed no damage after 1000 cycles of friction; its corrosion resistance showed no corrosion in the internal structure after immersion in 5% hydrochloric acid and 5% sodium hydroxide solutions for 72 hours; its tensile strength can reach over 1500N; and its impact resistance showed no fiber loss under 10J impact. All performance characteristics are superior to those of similar optical cables in the existing technology.

[0047] The key design feature of this utility model is:

[0048] Firstly, this utility model features a multi-layered wear-resistant structure with spiral wear-resistant protrusions on the outer wall of the wear-resistant base sleeve, which increases the force-bearing area of ​​the contact surface and reduces local wear. At the same time, silicon carbide wear-resistant particles are embedded on the surface of the protrusions and the outer wall, which have high hardness and strong wear resistance, and can effectively resist friction during the laying process and long-term outdoor wear. Compared with the traditional flat sheath structure, the wear-resistant life is increased by more than 3 times.

[0049] Secondly, it adopts an all-round anti-corrosion design, forming a multi-layer anti-corrosion barrier from the polytetrafluoroethylene coating of the central reinforcement and the zinc-nickel alloy coating of the metal armor mesh to the outer polyurea anti-corrosion coating. At the same time, the anti-corrosion isolation membrane can block the radial penetration of corrosive media, and the water-blocking filler and water-swellable water-blocking tape can prevent the longitudinal penetration of water. Even if the outer sheath is damaged, the cable core can still be protected by the inner anti-corrosion structure, making it suitable for harsh environments such as acid, alkali and humidity.

[0050] Furthermore, the central reinforcement and aramid reinforcing yarn work together to improve tensile strength, the metal armor mesh enhances compressive and impact resistance, and the elastic buffer and hollow cavity design can effectively absorb stress generated by external impact and temperature changes, avoiding micro-bending loss in the optical fiber.

[0051] Furthermore, the materials used in this utility model are all existing mature materials, the structural design is reasonable, it can be prepared by conventional optical cable production equipment, the production process is simple, the cost is controllable, it is suitable for various scenarios such as overhead, direct burial, and industrial plants, and has a wide range of application prospects.

[0052] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A highly wear-resistant and corrosion-resistant communication optical cable, characterized in that: It includes a cable core assembly, a buffer anti-corrosion layer, a reinforced protective layer, and a wear-resistant and corrosion-resistant outer layer; the cable core assembly is located at the center of the optical cable, and the buffer anti-corrosion layer, the reinforced protective layer, and the wear-resistant and corrosion-resistant outer layer are sequentially fitted from the inside to the outside. The cable core assembly includes a central reinforcing member, a fiber optic loose tube, and a water-blocking filler. The fiber optic loose tube is twisted around the central reinforcing member, and multiple colored optical fibers are provided inside the fiber optic loose tube. The water-blocking filler is filled inside the fiber optic loose tube, and the outer wall of the fiber optic loose tube is wrapped with a water-swelling water-blocking tape. The buffer and anti-corrosion layer includes an inner buffer sleeve, an anti-corrosion isolation membrane, and an elastic buffer element; the inner buffer sleeve is fitted on the outside of the cable core assembly, and its inner wall is in contact with the outer wall of the optical fiber loose tube; the anti-corrosion isolation membrane is wrapped around the outside of the inner buffer sleeve, and the elastic buffer element is evenly disposed between the inner buffer sleeve and the anti-corrosion isolation membrane. The reinforced protective layer includes a metal armor mesh, aramid reinforcing yarn, and an outer buffer sleeve; the metal armor mesh is woven from stainless steel wire and is fitted onto the outside of the anti-corrosion isolation membrane; the aramid reinforcing yarn is evenly twisted between the metal armor mesh and the outer buffer sleeve. The wear-resistant and corrosion-resistant outer layer includes a wear-resistant base sleeve, silicon carbide wear-resistant particles, and a polyurea anti-corrosion coating. The wear-resistant base sleeve is fitted on the outside of the outer buffer sleeve. The outer wall of the wear-resistant base sleeve is provided with spiral wear-resistant protrusions. The silicon carbide wear-resistant particles are uniformly embedded in the surface and outer wall of the wear-resistant protrusions. The polyurea anti-corrosion coating is sprayed and formed on the outer surface of the wear-resistant base sleeve.

2. The high wear-resistant and corrosion-resistant communication optical cable according to claim 1, characterized in that: The central reinforcing member is a glass fiber reinforced plastic rod with a polytetrafluoroethylene anti-corrosion coating on its outer surface.

3. The high wear-resistant and corrosion-resistant communication optical cable according to claim 1, characterized in that: The anti-corrosion isolation membrane is an aluminum-plastic composite membrane.

4. The high wear-resistant and corrosion-resistant communication optical cable according to claim 1, characterized in that: The elastic buffer is an annular rubber protrusion, which is integrally formed and connected with the inner buffer sleeve. The interior of the elastic buffer has a hollow cavity filled with inert gas.

5. The high wear-resistant and corrosion-resistant communication optical cable according to claim 1, characterized in that: The outer buffer sleeve is made of low-smoke halogen-free polyolefin material.

6. The high wear-resistant and corrosion-resistant communication optical cable according to claim 1, characterized in that: The loose tube of the optical fiber is made of modified PBT material, and its inner wall is coated with a silicone grease lubricating layer; the colored optical fiber has a coating layer, which is a UV-curable acrylate resin, and the coating layer has a thickness of 250 μm.

7. The high wear-resistant and corrosion-resistant communication optical cable according to claim 1, characterized in that: The metal armored mesh uses stainless steel wire with a diameter of 0.1-0.15mm and a weaving density of not less than 90%. The surface of the metal armored mesh is coated with a zinc-nickel alloy anti-corrosion coating with a thickness of 0.05-0.1mm.

8. The high wear-resistant and corrosion-resistant communication optical cable according to claim 1, characterized in that: The wear-resistant base sleeve is made of polyurethane material, and the Shore hardness of the wear-resistant base sleeve is D65-D75. The height of the wear-resistant protrusion is 1.5-2.0mm, and the pitch of the wear-resistant protrusion is 50-80mm.

9. The high wear-resistant and corrosion-resistant communication optical cable according to claim 1, characterized in that: The number of elastic buffers is 4-6, which are evenly distributed along the circumference of the inner buffer sleeve, and the distance between two adjacent elastic buffers is 30-50mm.

10. The high wear-resistant and corrosion-resistant communication optical cable according to claim 1, characterized in that: The thickness of the polyurea anti-corrosion coating is 0.8-1.2 mm.

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