A high-strength suspension insulator for UHV transmission lines

Abstract

The invention discloses a high-strength suspension insulator for extra-high voltage transmission lines, which comprises an outer insulating shell, and a fixed upper fitting is installed inside the upper end of the outer insulating shell, and the upper end of the outer insulating shell is correspondingly An integrated steel cap structure is provided; lower fittings are installed inside the lower end of the outer insulating shell, and a connecting ball head is correspondingly installed at the lower end of the outer insulating shell. The suspension insulator in this device is a high-strength and buffer-type combined insulator structure. Several insulating mandrels between the upper and lower fittings increase the strength and disperse the stress by increasing the gap; and the spring parts installed on the insulating mandrel and the insulating shell The spring groove is set on the top, and the corresponding spring is installed as a buffer. The overall structure is more reasonable and the strength is higher.

Description

technical field [0001] The invention relates to the field of insulator equipment in power systems, in particular to a high-strength suspension insulator for ultra-high voltage transmission lines. Background technique [0002] In the prior art, in order to increase and ensure the mechanical strength, especially the strength of ceramic parts used for insulators, it is necessary to design the raw materials and mechanical strength of the insulator, and the design of mechanical strength is usually based on the characteristics of the insulator components. Design, including electrical characteristics , mechanical characteristics and aging characteristics of the beam design, the use of high-strength insulators is very important in the work of high-voltage transmission lines. [0003] In the prior art, insulators are necessary installation components for high-voltage transmission lines, and are widely used in electronic systems. The existing insulator structures include an inner mand...

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Problems solved by technology

[0003] In the prior art, insulators are necessary installation components for high-voltage transmission lines and are widely used in electronic systems. The existing insulator structure includes internal mandrels, external sheds and necessary connecting components at both ends; and the use of insulators is usually It has two functions. On the one hand, the distance between the outer sheds is to realize the creepage phenomenon of high-voltage lines; while the inner mandrel is to support and fix high-voltage lines, effectively overhead transmission lines; and in the UHV transmission lines in the prior art Due to the high-voltage state, high-strength insulators are needed to support the overhead lines. In the existing insulators, the inner mandrel is usually provided as a whole, and the shed structure is directly connected to the mandrel. In this structure, on the one hand, the mandrel is set as a whole, and the toughness and strength are not enough; on the other hand, the mandrel is integrated with the outer shed, and there is no gap inside, so the heat generated by the high-voltage transmission line cannot be effectively dissipated, resulting in the installation of high-voltage lines. not stable enough

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