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Composite insulator and preparation method thereof

A technology of composite insulators and insulating layers, applied in the direction of insulators, electrical components, circuits, etc., can solve the problems of easy corona generation, uneven voltage distribution of composite insulators, hazards, etc., to reduce the generation of corona, small distance, increase Effect of leak distance

Active Publication Date: 2010-07-21
秦琛 +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to better overcome the serious inhomogeneous voltage distribution of composite insulators, the excessively high voltage drop at the wire end, easy to generate corona, and cause harm, the invention provides a composite insulator and its preparation method

Method used

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  • Composite insulator and preparation method thereof
  • Composite insulator and preparation method thereof

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment: figure 1 , a composite insulator, including a mandrel 1 and fittings, the mandrel 1 is arranged with shed strings, the shed strings include pure silicone sheds 4 and sheds 2 embedded with capacitors, the capacitors include The annular umbrella-shaped first metal sheet 31 and the second metal sheet 32, that is, the first metal sheet 31 and the second metal sheet are respectively embedded in the shed 2, and the first metal sheet 31 is surrounded by an insulating material. Wrapped by the first insulating layer, the second metal sheet 32 ​​is surrounded by a second insulating layer made of insulating material, so that the first metal sheet 31 and the second metal sheet 32 ​​are insulated from each other, and the first metal sheet 31 becomes one of the capacitors. pole plate, the second metal sheet 32 ​​becomes another pole plate of the capacitor,...

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Abstract

The invention relates to an insulator, in particular to a composite insulator used for overhead power transmission line with rated voltage higher than 10kV and a preparation method thereof. The composite insulator comprises a core rod, a full skirt and an end fitting, wherein the full skirt is internally embedded with a capacitor, the capacitor comprises a first metal sheet and a second metal sheet which are in an annular umbrella shape, the periphery of the first metal sheet is wrapped by a first insulating layer made of an insulating material, and the periphery of the second metal sheet is wrapped by a second insulating layer made of the insulating material. The invention also relates to the preparation method of the composite insulator. The invention has the advantages of increasing the capacitance of the composite insulator, improving the uniformity of voltage distribution, lowering voltage drop at a lead end, reducing the occurrence of corona, avoiding hazards on the composite insulator from the corona, and improving surface flashover voltage due to mutual composition of the first insulating layer and the second insulating layer.

Description

【Technical field】 [0001] The invention relates to an insulator, in particular to a composite insulator for overhead transmission lines with a rated voltage higher than 10kV and a preparation method thereof. 【Background technique】 [0002] The insulator refers to the insulating and mechanically fixed insulating member between the live conductor and the grounding tower. Insulators commonly used in overhead transmission lines include: porcelain insulators, glass insulators, and rod-shaped suspension composite insulators (also known as composite insulators or composite insulators). [0003] The composite insulator mainly includes three parts: glass fiber epoxy resin lead rod (hereinafter referred to as mandrel), silicone rubber shed and fittings. The fittings are metal conductors located at the upper and lower ends of the composite insulator. The axial voltage distribution of the small long rod insulation structure is extremely uneven, especially at the wire end where the field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/00H01B17/42H01B19/00
Inventor 秦国富秦琛
Owner 秦琛
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