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Details the structural characteristics of the composite insulator

Composite insulator structure, composite insulator, also known as organic insulator or porcelain insulator, composite insulator, rubber insulation material, it is made of organic composite composite insulator, mainly core rod, hardware, umbrella skirt and rubber layer. The hardware is the transmission part of the mechanical load of the composite insulator, which is connected with the mandrel to form a joint of the composite insulator. This structure is affected by the strength of the core and the mechanical properties of the insulator.


The jacket is the outer insulation of the composite insulator and is used to isolate the composite insulator of high enough moisture and flash insulation to protect the core from atmospheric attack. The mandrel is the mechanical load of the composite insulator and the load bearing portion of the insulating body.


    A portion of the bonding layer is the connection between the jacket and the mandrel. The other part is to use a sealant to complete the connection between the skirts. The quality of the connection is directly related to the level of internal insulation.


    The advantages of composite insulators have superior mechanical properties: the epoxy glass fiber core rod has an expansion strength of 1.5 times, the ordinary steel and high strength porcelain are 3 to 4 times, and the strong axial tensile force has a strong Strong vibration absorption, high shock absorption performance, 1/7 ~ 1/10 porcelain insulator. The anti-pollution flash performance is good: the composite insulator is water-repellent, and the composite insulator will form a water film when it is not raining, dripping water, and it is difficult to form a conductive path, and the flashing pressure is high, and the voltage level of the porcelain insulator is 3 times.


    Excellent corrosion resistance: the surface of the insulator is irreversible, the normal standard is not less than 4.5, and the composite insulator is 6~7. Good anti-aging performance: After ten years of practice tests, the composite insulator has a deeper color and The electrical constant and the dielectric loss angle are slightly increased, the surface is wet, the electric corrosion resistance is not changed, and the anti-aging property is good.


    Stable structure: general porcelain suspension insulators are glue assembly structures, electrochemical corrosion, and can produce zero low values in the operation of insulation resistance, while composite insulators with glue assembly structure, its core is solid insulation rod, no degradation Zero-value insulators do not appear in the pinch.


    The line runs efficiently: the composite insulator is clean and clean, and there is no zero-value insulator. Therefore, the cleaning inspection can be changed to every 4 to 5 years, shortening the inspection time and power failure time. Lightweight: Reduce the labor intensity of light traffic and construction workers.