Umbrella-shaped structure for combined insulator of high altitude ice-covering area

A composite insulator, high-altitude technology, applied in the direction of insulators, suspension/strain insulators, electrical components, etc.
CN101097797AInactive Publication Date: 2008-01-02CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2008-01-02
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

An umbrella type structure of composite insulator used in high-altitude ice-coated area is composed of at least two umbrella skirts as large, middle and small diameters. The invention is characterized in that the distance between umbrella skirts is 35-40mm, the distance between large umbrella skirts is 170-220mm, the diameter of large umbrella skirt is 170-220mm, the diameter ratio between large and small umbrella skirts is 1.8-2.1, the diameter ratio between large and small umbrella skirts is 1.3-1.5, the pitch angles of upper surfaces of large, middle and small umbrella skirts are 8-9 degrees, the pitch angles of lower surfaces of large, middle and small umbrella skirts are 0 degrees. The invention can be used for the external insulation engagement of power transmission system more than 110KV at high-altitude ice-coated area. The invention has reasonable structure, high ice flash voltage, low local field strength, and wide application, which can resist ice slush bridge umbrella skirt.
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Description

Technical field

[0001] The invention belongs to the technical field of high voltage and insulation, and particularly relates to an umbrella structure of composite insulators in high-altitude ice-coated areas. Background technique

[0002] Composite insulators have the characteristics of light weight, high strength, good pollution resistance, convenient operation and maintenance, etc., and have been widely used in power systems. The electrical performance of the external insulation of composite insulators mainly depends on the hydrophobicity of the material and the umbrella structure of the external insulation. The composite insulators in operation will inevitably face the influence of high altitude, icing and other complex environmental conditions. Hydrophobicity may be temporarily weakened or even completely lost. At this time, the umbrella structure of the composite insulator will determine the electrical performance of its external insulation. The test results show that the ex...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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