一种用于智能电网的高抗压保偏光缆

Abstract

本实用新型公开了一种用于智能电网的高抗压保偏光缆，其包括核心光纤组件、缓冲保护层、抗压支撑骨架及外护层。核心光纤组件外包覆偏振保持层和金属屏蔽层；缓冲保护层内设弹性支撑柱，能吸收分散压力；抗压支撑骨架采用多边形网格结构，外部包裹高强度复合材料外护层，并设有温度调节层和湿度感应带。本申请通过优化结构与材料，显著提升光缆抗压性、环境适应性及稳定性，满足智能电网在恶劣条件下的长期运行需求，同时保持良好的柔韧性和布设效率。

Claims

1. A high crush resistant polarization maintaining optical cable for a smart grid, comprising: The core optical fiber assembly (1), buffer protection layer (2), pressure-resistant support frame (3), and outer sheath (4) are characterized in that: the core optical fiber assembly (1) is located at the center of the optical cable, and the buffer protection layer (2), pressure-resistant support frame (3), and outer sheath (4) are arranged in sequence on the outside; the buffer protection layer (2) and the core optical fiber assembly (1) are filled with elastic damping material; the pressure-resistant support frame (3) adopts a polygonal grid structure and is tightly attached to the buffer protection layer (2) through an embedded connection; and the outer sheath (4) is made of high-strength composite material and has anti-slip texture on its inner surface.

2. The high crush resistant polarization maintaining optical fiber cable for smart grid of claim 1, wherein: The compressive support frame (3) includes multiple intersecting support bars (5). The cross section of the support bar (5) is arc-shaped and the surface is coated with an anti-corrosion coating. The support bars (5) are fixedly connected to each other by snap fasteners (6). The two ends of the snap fasteners (6) are respectively provided with protrusions and grooves.

3. The high-voltage-resistant polarization-maintaining optical cable for smart grids according to claim 1, characterized in that: The buffer protective layer (2) includes an inner layer and an outer layer. The inner layer is made of a flexible polymer material, and the outer layer is made of an elastic rubber material. Multiple sets of elastic support columns (7) are provided between the inner layer and the outer layer. Each elastic support column (7) is composed of multiple independent columnar bodies, and a spiral cavity is provided in the middle of the columnar body.

4. The high crush resistant polarization maintaining optical fiber cable for smart grid of claim 1, wherein: The core optical fiber assembly (1) includes an optical fiber core and a cladding layer. The optical fiber core is wrapped with a cladding layer made of a low refractive index material. A polarization maintaining layer is disposed on the outside of the cladding layer. The polarization maintaining layer is made of a birefringent crystal material and coated with an anti-ultraviolet coating. A metal shielding layer is disposed on the outside of the polarization maintaining layer.

5. The high crush resistant polarization maintaining optical fiber cable for smart grid of claim 1, wherein: The outer protective layer (4) is provided with a wear-resistant coating, which is made of nano-sized ceramic particles and polymer materials and has a thickness of 0.5 mm to 1 mm. The outer protective layer (4) is provided with a temperature regulating layer (9), which is made of phase change material and embedded with a micro heat pipe.

6. The high crush resistant polarization maintaining optical fiber cable for smart grid of claim 3, wherein: A humidity sensing strip (8) is provided between the inner and outer layers of the buffer protective layer (2). The humidity sensing strip (8) is made of hygroscopic material and coated with a color-developing coating. The two ends of the humidity sensing strip (8) are respectively bonded and fixed to the inner and outer layers of the buffer protective layer (2) by hot melt adhesive.

7. The high crush resistant polarization maintaining optical fiber cable for smart grid of claim 1, wherein: The outer side of the compressive support frame (3) has multiple reinforcing ribs evenly distributed along the axial direction. The reinforcing ribs are made of fiber-reinforced composite material. The two ends of each reinforcing rib are fastened to the compressive support frame (3) and the outer protective layer (4) by bolts. The bolt heads are provided with anti-loosening washers.

Images