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Anti-ice-flashover composite insulator with lightning protection function

A composite insulator and anti-icing technology, applied in the direction of insulators, suspension/strain insulators, electrical components, etc., can solve the problems of increasing the difficulty of erection and construction costs, single function, and only lightning protection

Active Publication Date: 2010-10-13
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of method can only prevent ice or lightning, and has the defect of single function.
Moreover, if a new line arrester is added, a fixed device needs to be added to the original tower, which increases the difficulty of erection and the construction cost

Method used

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  • Anti-ice-flashover composite insulator with lightning protection function
  • Anti-ice-flashover composite insulator with lightning protection function

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Embodiment Construction

[0026] Such an anti-icing flash composite insulator with lightning protection function in this embodiment of the present invention, see figure 1 , the mandrel 2 is a commercially available epoxy glass fiber lead rod produced by China Xiangfan State Grid Synthetic Insulator Co., Ltd. The coaxial line is placed on the sleeve 9 at the upper end of the mandrel 2, the upper end cover 6 and the lower end cover 10 at both ends of the sleeve 9, and the laminated metal oxide valve plate is placed on the inner mandrel 2 of the sleeve 9 with the coaxial line 8. The spring 7 set on the mandrel 2 between the metal oxide valve plate 8 and the upper end cover 6 and the bottom plate 13 set on the lower end of the second composite umbrella cover 4 are all produced by China Dalian Favolta Electric Co., Ltd. company. Among them, the upper end cover 6 and the lower end cover 10 are cut from galvanized iron plates; the metal oxide valve piece 8 is an annular zinc oxide valve piece; the sleeve 9 i...

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Abstract

The invention relates to an anti-ice-flashover composite insulator with a lightning protection function, which comprises a mandril (2), and a casing (9) thereof is provided with a first composite umbrella cover (3). The mandril (2) in a cylinder is sleeved with stacked metal oxide valve plates (8) and a spring (7). The lower end of the mandril (2) is provided with a second composite umbrella cover (4). The upper end of the second composite umbrella cover (4) is sleeved with a first strap (11), and the lower end thereof is provided with a second strap (12). A bowl-shaped metal cap (1) and a ball-shaped metal cap (5) are respectively covered on both ends of the mandril (2). In freezing days, the insulator can prevent ice covering and blocking arc serial connection, and greatly reduces the possibility of line trip. The invention has the beneficial effects that: (1) the bearing load for the whole mandril to suspend a transmission conductor is higher; (2) a lightning protection section bears lower voltage; (3) the metal oxide valve plates contact tightly; (4) the lines prevent lightning; and (5) an umbrella skirt string structure insulating outer cover which comprises staggered and laminated large and small umbrella skirts can prevent ice flashover in freezing weather.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering equipment, and in particular relates to an anti-icing flash composite insulator with lightning protection function, which is suitable for high-voltage transmission lines in thunder-prone areas prone to ice disasters. Background technique [0002] In recent years, with the rapid development of my country's electric power construction, the coverage area of ​​the power grid has become wider and wider, and many transmission lines need to be erected in mountainous areas with complex terrain and cold climate. In these areas, in case of bad weather, the transmission line is prone to trip accidents due to icing flashover or lightning flashover, seriously affecting the safe operation of the power grid. For icing flashover at present, there are only methods of increasing umbrella diameter, umbrella spacing and enriching the umbrella structure of synthetic insulators, which can improve the ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/02H01B17/38H01B17/42H01C7/12
Inventor 陆佳政赵纯方针蒋正龙李波
Owner STATE GRID CORP OF CHINA
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