Lightning arrester for inhibiting flashover of resistor disc and assembly method of lightning arrester

A technology for suppressing resistance, assembly method, applied in the field of lightning arrester

Pending Publication Date: 2021-09-14
CHINA ELECTRIC POWER RES INST +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a lightning arrester and its assembly method for sup

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  • Lightning arrester for inhibiting flashover of resistor disc and assembly method of lightning arrester
  • Lightning arrester for inhibiting flashover of resistor disc and assembly method of lightning arrester

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Embodiment Construction

[0032] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

[0033] refer to figure 1 In the first aspect, the present application provides a lightning arrester for suppressing the flashover of the resistive sheet, including: a lightning arrester core, which includes a plurality of coaxially arranged resistive sheets 2 and metal pads arranged at both ends of each of the resistive sheets 2 1; a fixing device, which fixes the arrester core by clamping the two ends of the arrester core; an insulating layer 4, which covers the outer side of the arrester core and the fixing device, and the insulating layer 4 A plurality of rubber rings distributed along its axial direction are arranged on the peripheral wall of the arrester; metal e...

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Abstract

The invention provides a lightning arrester for inhibiting the flashover of a resistor disc and an assembly method of the lightning arrester. The lightning arrester for inhibiting flashover of the resistor disc comprises a lightning arrester core body, a fixing device, an insulating layer and two metal end covers; the lightning arrester core body comprises a plurality of coaxially arranged resistor discs and metal cushion blocks arranged at the two ends of each resistor disc; the fixing device fixes the lightning arrester core body by clamping the two ends of the lightning arrester core body; the insulating layer coats the outer sides of the lightning arrester core body and the fixing device, and a plurality of rubber rings which are distributed along the axial direction of the insulating layer are arranged on the peripheral wall of the insulating layer; the two metal end covers are respectively arranged at two ends of the lightning arrester core body, at least one metal end cover is provided with a connecting part, and the connecting parts are used for fixing the lightning arrester and connecting a plurality of lightning arresters in series; with the metal cushion blocks adopted, the distance between every two adjacent resistor discs can be adjusted, and the height of the whole lightning arrester core body can be adjusted. The insulating layer can restrain flashover arcs of defective arcs, effectively isolate and protect adjacent normal resistor discs, and avoid faults of the whole lightning arrester caused by defects of a single resistor disc.

Description

technical field [0001] The invention belongs to the technical field of lightning arresters, and in particular relates to a lightning arrester for suppressing the flashover of resistor sheets and an assembly method thereof. Background technique [0002] Large-capacity multi-column shunt arresters are widely used in DC converter stations, AC series compensation devices and other fields. The main function is to absorb redundant energy of the system and limit overvoltage. The operation experience shows that the failure rate of this kind of arrester has always been high due to the large number of parallel columns. Studies have shown that the main reason for the high failure rate of large-capacity multi-column parallel surge arresters is the existence of defective resistors with a very low probability. When the surface of a defective resistor flashes over, it is easy to ablate the adjacent qualified resistors, thus developing into the entire column of the arrester. Flashover fail...

Claims

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Application Information

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IPC IPC(8): H01C7/12H01C17/00
CPCH01C7/12H01C17/00
Inventor 殷禹时卫东张搏宇赵霞康鹏张刘春何计谋张宏涛赵大翠徐学亭
Owner CHINA ELECTRIC POWER RES INST
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