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Lightning arrester

A lightning arrester and insulating cylinder technology, which is applied in the field of lightning arresters, can solve problems such as damage to the resistance sheet, achieve the effects of increasing friction, avoiding damage to the resistance sheet, and reducing the extrusion force

Pending Publication Date: 2022-03-11
HENAN PINGGAO ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a lightning arrester to solve the problem in the prior art that the resistance sheet is easily damaged when the lightning arrester is placed horizontally for transportation

Method used

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Examples

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Embodiment 1

[0039] Such as figure 1As shown, the lightning arrester includes a housing 10, an insulating cylinder 20 is arranged inside the housing 10, and a plurality of resistor sheets 40 are sequentially stacked in the insulating cylinder 20 along the axial direction of the insulating cylinder 20, and one end of the insulating cylinder 20 is provided with a resistor The pieces 40 are press-fitted against the spring 30 , that is, a plurality of resistance pieces 40 can be pressed and fixed in the insulating cylinder 20 through the elastic force of the spring 30 . Wherein a plurality of resistive slices 40 are divided into at least two sections of resistive strips arranged sequentially along the stacking direction. In this embodiment, the resistive strips are provided with five sections, and the number of resistive strips 40 in each section of resistive strips is the same. Supporting pads 50 are provided between two adjacent segments of resistance sheet groups. The supporting pads 50 are...

Embodiment 2

[0046] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the plurality of resistive slices 40 are divided into five segments of resistive slices arranged sequentially along the stacking direction. In this embodiment, however, the plurality of resistor sheets 40 can be divided into two, three, four, six or more resistor sheet groups arranged in sequence along the stacking direction.

Embodiment 3

[0048] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, three exhaust holes 21 are arranged at intervals along the axial direction of the insulating cylinder 20 . However, in this embodiment, two, four or more exhaust holes 21 may be arranged at intervals along the axial direction of the insulating cylinder 20 . Certainly, the air hole 21 may also be a long hole capable of covering all the resistive sheets.

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Abstract

The lightning arrester comprises a shell, an insulating cylinder is arranged in the shell, a plurality of resistor discs are stacked in the insulating cylinder, at least one end of the insulating cylinder is provided with springs matched with the resistor discs in a jacking mode, and the resistor discs are divided into at least two resistor disc sets which are sequentially arranged in the stacking direction. A supporting pad is arranged between any two adjacent resistor disc groups, the supporting pad is a conductor, the supporting pad is adaptively arranged in the insulating cylinder, and the supporting pad is supported on the cylinder wall of the insulating cylinder when the insulating cylinder is transversely arranged. Compared with the prior art, when the lightning arrester is horizontally placed and transported, the damage of the resistor disc caused by vibration generated during transportation can be avoided, and the damage of the lightning arrester caused by the damage of the resistor disc can be avoided.

Description

technical field [0001] The invention belongs to the technical field of lightning arresters, and in particular relates to a lightning arrester. Background technique [0002] The tank type surge arrester is a kind of overvoltage protection device commonly used in the power system. Its core component is the core body arranged in the tank type surge arrester shell. In order to ensure good contact between the resistors, the end of the insulating cylinder is provided with a spring that presses and fits the resistors. [0003] With the development of resistor technology, zinc oxide resistors have appeared 300V / mm, 400V / mm and other high-gradient resistors, which provide convenience for the single-column design of products. However, in the voltage field of 550kV and 800kV, the height of the core body can reach 1800mm and 2400mm respectively. Since the height of the core body is too high, the arrester needs to be transported horizontally when transporting the arrester. [0004] How...

Claims

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Application Information

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IPC IPC(8): H01C7/12
CPCH01C7/12
Inventor 赵新科孟庆喜廉丽娟吴超申磊刘瑞瑞李纪强岳光华田素君魏晓耀李阳王凯房鑫田超群
Owner HENAN PINGGAO ELECTRIC
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