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Overvoltage relief device of insulator

A technology of relief device and insulator, which is applied in insulators, electrical components, circuits, etc., can solve the problems of production cost, management cost, distribution cost, and increase in installation and maintenance man-hours.

Inactive Publication Date: 2013-05-08
SUZHOU AIJIAN ELECTRICAL PORCELAIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing scheme, the metal cap is completely covered by an insulating protective cover, and an overvoltage relief electrode needs to be added to the metal cap, which increases production costs, management costs, distribution costs, and installation and maintenance man-hours.

Method used

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  • Overvoltage relief device of insulator
  • Overvoltage relief device of insulator
  • Overvoltage relief device of insulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1, such as figure 1 with figure 2 As shown, an overvoltage relief device for an insulator is installed on an insulator provided with a metal cap 1, a crimping device 2, a metal seat 3, and a porcelain body 4. The overvoltage relief device includes a cover placed on the metal cap 1. The protective cover 5 and the over-voltage relief electrode 6 installed on the metal seat 3, the side of the protective cover 5 in contact with the metal cap 1 is provided with an over-voltage relief groove 51, the over-voltage relief electrode 6 is one, the over-voltage relief There are two symmetrical relief slots 51, and they are located at the positions corresponding to the overvoltage relief electrodes 6, so that you can avoid checking whether the overvoltage relief slots 51 correspond to the positions of the overvoltage relief electrodes 6 during installation. Installation errors and increased installation procedures.

[0018] The working principle is that due to the existence of...

Embodiment 2

[0020] Example 2, such as image 3 with Figure 4 As shown, the rest is the same as Embodiment 1, except that the overpressure relief groove 51 is an annular groove around the metal cap 1 and there are two overpressure relief electrodes 6. Here, because the overpressure relief groove 51 is an annular groove, no matter what the number of overpressure relief electrodes 6 is, the usage requirements can be met.

[0021] The beneficial effect of adopting this technical solution is that: the side of the protective cover 5 in contact with the metal cap 1 is provided with an overpressure relief groove 51, so the metal cap 1 can be used as a part of the overvoltage relief electrode 6, thereby eliminating the need to install on the metal The overvoltage relief electrode 6 on the cap 1 greatly reduces the production cost, management cost, distribution cost, and installation and maintenance man-hours.

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PUM

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Abstract

The invention discloses an overvoltage relief device of an insulator, which is arranged on the insulator which is provided with a metal cap, a line pressing device, a metal base and a ceramic body. The overvoltage relief device comprises a protective cover and an overvoltage relief electrode, wherein the protective cover is arranged on the metal cap, and the overvoltage relief electrode is arranged on the metal base; and an overvoltage relief groove is arranged on one surface of the protective cover which is in contact with the metal base. The technical scheme has the following beneficial effects that: as the overvoltage relief groove is arranged on one surface of the protective cover which is in contact with the metal base, the metal cap can be used as a part of the overvoltage relief electrode, thereby the overvoltage relief electrode arranged on the metal cap is omitted so that the production cost, the management cost, the distribution cost and the working hour of installation and maintenance are greatly reduced.

Description

Technical field [0001] The invention relates to the field of high-voltage electric transmission equipment, in particular to an insulator overvoltage relief device. Background technique [0002] Insulators are widely used in the field of high-voltage power transmission. In order to prevent overvoltages such as lightning from causing direct damage to the insulator itself, an overvoltage relief device is usually installed, that is, overvoltage relief electrodes are installed in pairs on the metal cap and metal seat of the insulator , Lead the over-voltage arc away from the surface of the insulator body into the ground to reduce the damage to the insulator body, such as an insulator string arc discharge device published by the patent number 200720149704.0, characterized in that the insulator string is equipped with both ends Fittings, the fittings are fixedly equipped with parallel arc venting air gap electrodes, the length of the discharge air gap is slightly smaller than the length...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/46
Inventor 张俊明
Owner SUZHOU AIJIAN ELECTRICAL PORCELAIN