24kv polymer composite suspension insulator

    The rod-shaped suspension composite insulator is composed of mandrel, shed sheath (bonding layer), and connecting hardware. The mandrel and metal end have strong tensile and flexural strength, and the umbrella tray made of organic material has good hydrophobicity and anti-pollution flashover ability. It is suitable for High-voltage transmission lines, especially in polluted areas, and can effectively prevent pollution flashover accidents. When the line voltage and damage load are the same, the weight of the rod-shaped Composite insulator is only 1/6~1/10 of that of the Suspension insulator string, and the installation and replacement are relatively easy. These advantages make it a replacement product of the currently widely used porcelain insulators. The rod-shaped composite insulator has high specific strength (ratio of tensile strength to mass), and has excellent pollution flashover resistance, but there is the possibility of breakdown in the interface and brittle fracture of the core rod, and the service life of the organic composite material and the end connection There is no consensus on the long-term reliability of the district.

    The mandrel is a glass fiber reinforced plastic rod formed by resin bonding millions of glass fibers in parallel along the axis. The tensile strength is higher than 600MPa, which is 3~5 times that of high-strength porcelain. It is equivalent to high-quality carbon steel and has good resistance. Flexibility and fatigue resistance, bear the mechanical load of synthetic insulators, and are the main part of the internal insulation. Reinforcing fibers and resins with small creep are selected to ensure good mechanical and electrical properties of the mandrel.