Hollow ceramic support insulator is used as high-voltage insulating and sealing through which the discharge electrode suspension rod entering the electric field in an ESP, and in small size ESP it also functions as supporting of the discharge electrode system. By its configuration, it is classified into three types: cylindrical insulator, conical insulator and special-shaped insulator.
The hollow ceramic support insulator is glazed white or brown on surfaces inside and outside with both ends ground.
The ceramic support insulator conforms to the Chinese standards of GB/T772-2005 ‘Technical specifications for high-voltage insulator’ and JB/T 5909-2010 ‘The ceramic insulator used in precipitator’, and the IEC series standard is also followed.
With different materials the ceramic support insulator can be used under the temperature ≤250℃ or ≤350℃ with the operating voltage ranging from 72kV to 120kV and a mechanical compressive failing load not less than 500kN.
The quartz hollow support insulator is high-purity natural silica based, fabricated through the process of iron-removing, impurities-removing, selecting, pickling and then high–temperature melting, shaping and cooling into non-transparent quartz products with various sizes. It is used in ESP and electric tar remover which are widely used in coal fired power stations, iron and steel plants, cement plants, non-ferrous smelterys, chemical factories and paper making plants.
The specific gravity of opaque quartz glass: 2.06~2.18g/cm3.
Mohs hardness is 5~6
Compressive loading strength: 410~420MPa
Flexural strength: 40~60MPa
Tensile strength: 35MPa
Impacting strength: 0.085MPa
The quartz support insulator can be used under the temperature ≤500℃ with the operating voltage ranging from 72kV to 120kV and a mechanical compressive failing load not less than 300kN.
95A hollow support insulator is used to support the discharge electrode in an ESP, featuring such properties as high-temperature withstanding, high insulating and high mechanical strength, which the ordinary insulators hardly possess.
The 95A support insulator can be used under the temperature up to 600℃ with the operating voltage ranging from 72kV to 120kV and a mechanical compressive failing load not less than 1000kN.
Size: Height≤700mm
OD≤600mm
Wall thickness
δ=30mm
