A reinforcing structure for a distributed vibration sensing optical cable

Abstract

The utility model discloses a kind of reinforcing structure of distributed vibration sensing optical cable, belong to sensing optical cable technical field, including sensing optical cable body, the inside of sensing optical cable body is provided with wire core, the surface of sensing optical cable body is equipped with buffer assembly, the surface of buffer assembly is equipped with reinforcing assembly, the reinforcing assembly includes reinforcing layer, reinforcing layer is set in the surface of buffer assembly, the utility model is combined by reinforcing layer inside reinforcing rib and aramid fiber woven structure, significantly improve the tensile and extrusion resistance of structure;Protective layer and anticorrosive coating can effectively resist the erosion of environmental factors such as humidity, corrosion, prolong the service life of optical cable, the utility model is set buffer layer outside sensing optical cable body, cooperate with elastic filler and can effectively absorb external vibration impact, reduce the influence to sensing optical cable body.

Description

Technical Field

[0001] This utility model belongs to the field of optical fiber sensing technology, specifically relating to a reinforcement structure for a distributed vibration sensing optical fiber. Background Technology

[0002] Distributed vibration sensing optical cables, with their advantages of long-distance, wide-range, and real-time monitoring, are widely used in important fields such as oil and gas pipeline leak monitoring, railway track safety inspection, and perimeter security. In practical applications, sensing optical cables usually need to be laid in complex environments, such as outdoor soil layers, pipeline outer walls, and bridge supports, and are inevitably affected by various external forces and environmental factors such as tension, compression, vibration impact, and environmental corrosion.

[0003] In existing technologies, to improve the mechanical performance of optical cables, methods such as increasing the sheath thickness and adding metal reinforcing cores inside the sheath are commonly used for reinforcement. However, this traditional structure has significant drawbacks: firstly, it lacks sufficient impact and tensile strength, making the optical cable prone to breakage or decreased transmission performance when subjected to sudden external impacts or environmental deformation; secondly, its protective capabilities are weak, failing to effectively resist erosion from humid and corrosive media, thus shortening the cable's lifespan. These problems severely affect the monitoring accuracy and reliability of distributed vibration sensing systems and increase maintenance costs. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a reinforcement structure for a distributed vibration sensing optical cable. This structure features a multi-layered composite design, enabling comprehensive reinforcement and protection of the sensing optical cable, thereby enhancing its stability and lifespan in complex environments.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reinforcement structure for a distributed vibration sensing optical cable, comprising a sensing optical cable body, wherein a wire core is provided inside the sensing optical cable body, a buffer component is provided on the surface of the sensing optical cable body, and a reinforcement component is provided on the surface of the buffer component. The reinforcement component includes a reinforcement layer, which is sleeved on the surface of the buffer component.

[0006] Preferably, the reinforcing layer has reinforcing ribs embedded inside.

[0007] Preferably, the surface of the reinforcing layer is provided with a protective layer.

[0008] Preferably, the surface of the protective layer is coated with an anti-corrosion coating.

[0009] Preferably, the buffer assembly includes a buffer layer, which is sleeved on the surface of the sensing optical cable body.

[0010] Preferably, an elastic filler is used to fill the space between the buffer layer and the sensing optical cable body.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a reinforcing layer, the reinforcing ribs in the reinforcing layer are combined with the aramid fiber braided structure, which significantly improves the tensile and compressive strength of the structure; the protective layer and anti-corrosion coating can effectively resist the erosion of environmental factors such as moisture and corrosion, and extend the service life of the optical cable.

[0012] 2. This utility model provides a buffer layer on the outside of the sensing optical cable body, which, together with elastic filler, can effectively absorb external vibration and impact, reducing the impact on the sensing optical cable body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the reinforcement component of this utility model; Figure 4 This is a schematic diagram of the structure of the buffer component of this utility model.

[0014] In the figure: 1. Sensor optical cable body; 2. Core; 3. Reinforcing component; 31. Reinforcing layer; 311. Reinforcing rib; 32. Protective layer; 321. Anti-corrosion coating; 4. Buffer component; 41. Buffer layer; 42. Elastic filler. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1

[0017] Please see Figure 1-4 The present invention provides the following technical solution: a reinforcement structure for a distributed vibration sensing optical cable, including a sensing optical cable body 1, a wire core 2 inside the sensing optical cable body 1, a buffer component 4 on the surface of the sensing optical cable body 1, and a reinforcement component 3 on the surface of the buffer component 4. The reinforcement component 3 includes a reinforcement layer 31, which is sleeved on the surface of the buffer component 4.

[0018] Specifically, reinforcing ribs 311 are embedded inside the reinforcing layer 31.

[0019] By adopting the above technical solution, the reinforcing layer 31 is woven from aramid fibers. Aramid fibers have the characteristics of high strength and high modulus, which can effectively improve the tensile performance of the structure. The reinforcing layer 31 is embedded with reinforcing ribs 311 that are uniformly distributed along the axial direction. The reinforcing ribs 311 are glass fiber reinforced plastic (FRP) ribs, which have the advantages of being lightweight and having high strength compared to traditional metal reinforcing cores. The principle behind the reinforcing ribs 311 improving the compressive strength is that the glass fiber reinforced plastic ribs themselves have excellent compressive strength, and their uniform distribution along the axial direction of the reinforcing layer 31 forms a multi-point rigid support structure. When the optical cable is subjected to external compressive force, the reinforcing ribs 311 can quickly disperse local pressure, avoiding stress concentration that could lead to deformation of the reinforcing layer 31 or damage to the optical cable itself. At the same time, the density of the aramid fiber braided structure and the rigid support of the reinforcing ribs 311 form a composite compressive resistance system of "flexible braiding plus rigid support," further improving the overall compressive resistance of the structure and effectively resisting compressive impacts in complex environments.

[0020] Specifically, a protective layer 32 is provided on the surface of the reinforcing layer 31.

[0021] By adopting the above technical solution, the protective layer 32 is made of rigid polyvinyl chloride (PVC) material, specifically SG-5 or SG-7 grade. After the formulation is modified (antioxidants and ultraviolet absorbers are added), this type of PVC has better mechanical strength, weather resistance and corrosion resistance than ordinary PVC, which can effectively resist the erosion of the external environment and make up for the performance shortcomings of ordinary PVC.

[0022] Specifically, the surface of the protective layer 32 is coated with an anti-corrosion coating 321.

[0023] By adopting the above technical solution, the anti-corrosion coating 321 further improves the anti-corrosion effect.

[0024] In this embodiment, the reinforcing layer 31 is woven from aramid fibers and combined with the internally uniformly distributed glass fiber reinforced plastic ribs to form a composite compressive and tensile resistant system, which significantly improves the overall strength of the structure. The protective layer 32 is made of modified SG-5 or SG-7 grade hard PVC, which has good corrosion resistance and anti-aging properties and can effectively resist external environmental erosion. This makes it easy to improve the overall strength, compression resistance and environmental adaptability of the device during use.

[0025] Example 2

[0026] The difference between this embodiment and embodiment 1 is that, specifically, the buffer component 4 includes a buffer layer 41, which is sleeved on the surface of the sensing optical cable body 1.

[0027] By adopting the above technical solution, the buffer layer 41 is made of elastic rubber material.

[0028] Specifically, an elastic filler 42 is filled between the buffer layer 41 and the sensing optical cable body 1.

[0029] By adopting the above technical solution, the elastic filler 42 is a rigid closed-cell polyurethane foam; polyurethane foam is a broad category of production process, polyurethane foam is a general name for products, and polyurethane sponge usually specifically refers to soft polyurethane foam; the rigid closed-cell polyurethane foam selected in this utility model has better structural stability and buffering and compression resistance compared with soft polyurethane sponge (open-cell structure). In terms of production process, a molding foaming process is adopted, which can accurately match the shape of the optical cable to achieve tight filling. Its closed-cell structure can not only prevent moisture penetration, but also utilize the internal independent air pores to undergo elastic deformation when subjected to vibration and impact. Through the air pore compression-rebound process, it absorbs impact energy, thereby effectively reducing the impact of external vibration on the sensing optical cable body 1 and ensuring stable and reliable buffering effect.

[0030] In this embodiment, the buffer layer 41 is made of elastic rubber material and combined with rigid closed-cell polyurethane foam filler. Through the dual effects of elastic deformation and energy absorption by air pores, it can efficiently absorb external vibration and impact, making the device easy to buffer external vibration in all directions during use and protect the optical cable body from damage.

[0031] The working principle and usage process of this utility model are as follows: In this utility model, the reinforcing layer 31 is woven from aramid fibers, with glass fiber reinforced plastic (FRP) ribs embedded inside, evenly distributed along the axial direction. Utilizing a composite system of "flexible weaving and rigid support," the tensile and compressive strength of the structure is significantly improved. The protective layer 32 uses modified SG-5 or SG-7 grade rigid PVC, combined with a surface anti-corrosion coating 321, effectively resisting erosion from environmental factors such as moisture and corrosion. The buffer layer 41 uses elastic rubber material, combined with rigid closed-cell polyurethane foam filler. Through the dual effects of elastic deformation and pore energy absorption, it efficiently absorbs external vibration and impact, reducing the impact on the sensing optical cable body 1. The overall structure achieves comprehensive reinforcement and protection of the sensing optical cable, improving its stability and service life in complex environments.

[0032] 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 reinforcing structure of a distributed vibration sensing optical cable, comprising a sensing optical cable body (1), the inside of the sensing optical cable body (1) is provided with a wire core (2), characterized in that: The surface of the sensing optical cable body (1) is provided with a buffer component (4), and the surface of the buffer component (4) is provided with a reinforcing component (3). The reinforcement component (3) includes a reinforcement layer (31) which is fitted onto the surface of the buffer component (4).

2. The reinforcing structure of a distributed vibration sensing optical cable according to claim 1, characterized in that: The reinforcing layer (31) has reinforcing ribs (311) embedded inside.

3. The reinforcing structure of a distributed vibration sensing optical cable according to claim 1, characterized in that: The surface of the reinforcing layer (31) is provided with a protective layer (32).

4. The reinforcement structure for a distributed vibration sensing optical cable according to claim 3, characterized in that: The surface of the protective layer (32) is coated with an anti-corrosion coating (321).

5. The reinforcing structure of a distributed vibration sensing optical cable according to claim 1, characterized in that: The buffer assembly (4) includes a buffer layer (41) which is fitted onto the surface of the sensing optical cable body (1).

6. The reinforcing structure of a distributed vibration sensing optical cable according to claim 5, characterized in that: An elastic filler (42) is filled between the buffer layer (41) and the sensing optical cable body (1).

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