Compound polymeric housed metal oxide arrester

Abstract

The invention discloses a compound polymeric housed metal oxide arrester. The compound polymeric housed metal oxide arrester comprises a plurality of arrester elements connected in series. Each arrester element comprises a compound housing, wherein an upper cover plate and a lower cover plate are arranged at the two ends of the compound housing, an arrester core is arranged between the upper cover plate and the lower cover plate, and a plurality of insulating rods are arranged in an inner cavity of the compound housing in the axial direction of the arrester core. Due to the adoption of the compound housings of the structure, the bending strength is increased by 50-120%, the winding degree is decreased by 30-80%, the tensile strength is improved by 100-400%, bending and stretching strength and rigidity of the compound housings are improved, the aim of applying the compound polymeric housed metal oxide arrester in occasions with high requirements for mechanical strength is achieved, radial displacement of the top end of the arrester under the effects of wire horizontal force, wind force and earthquake force is limited, stability of the mechanical structure and the core structure of the arrester is ensured, and safe running of the arrester is ensured.

Description

【Technical field】 [0001] The invention belongs to the field of lightning arresters, and in particular relates to a composite jacket lightning arrester. 【Background technique】 [0002] Composite jacket arrester is an important overvoltage protection device for various electrical equipment in the power system. It is connected in parallel next to the protected electrical equipment to prevent the protected electrical equipment from being damaged by lightning and operating overvoltage. [0003] In the application of composite jacket surge arresters, due to the high voltage level, high earthquake resistance, suspension installation and support insulation, the requirements for its mechanical strength (bending and tensile load) and seismic strength are relatively high. The jacket structure does not meet the requirements, and due to the manufacturing process of the composite jacket, it is limited to further improve the stiffness and strength of the composite jacket, and its deflectio...

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Problems solved by technology

[0003] In the application of composite jacket surge arresters, due to the high voltage level, high earthquake resistance, suspension installation and support insulation, the requirements for its mechanical strength (bending and tensile load) and seismic strength are relatively high. The jacket structure does not meet the requirements, and due to the manufacturing process of the composite jacket, it is limited to further improve the stiffness and strength of the composite jacket, and its deflection has exceeded the allowable value of the arrester, which affects the application of the composite jacket arrester

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