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Multistage horn-shaped backflushing discharge arc extinguishing tube

A technology of arc extinguishing tube and trumpet type, which is applied in the direction of circuits, electrical components, spark gaps, etc., and can solve problems such as line safety accidents, loss of application functions, failure of insulation coordination in parallel protection gaps, etc.

Pending Publication Date: 2020-10-27
王嬿蕾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing "guiding type" lightning protection mode mainly installs parallel protection gaps at both ends of the insulator string. Although it has a simple structure and is easy to install, it does not have an arc-extinguishing function module, so that the short-circuit current continues to flow into the system. Relying on the circuit breaker to cut off the short-circuit current and exchanging the "tripping rate for the accident rate" will easily cause huge safety accidents on the line
At the same time, due to the ablation effect of the short-circuit current, the insulation coordination of the parallel protection gap fails, and the application function is lost

Method used

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  • Multistage horn-shaped backflushing discharge arc extinguishing tube
  • Multistage horn-shaped backflushing discharge arc extinguishing tube
  • Multistage horn-shaped backflushing discharge arc extinguishing tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, a multi-stage trumpet-type recoil discharge arc extinguishing tube includes an arc extinguishing tube body 1, a lightning connection electrode 2 and a side recoil tube 4; the side recoil tube 4 is arranged in the arc extinguishing tube On the side wall of the main body 1, and the side recoil tube 4 communicates with the arc extinguishing tube body 1; the lightning connection electrode 2 is embedded in the arc extinguishing tube body 1, and the side recoil tube 4 is above and below both A lightning connection pole 2 is provided to make the arc extinguishing tube body 1 form a semi-closed space; the diameter of the arc extinguishing tube body 1 gradually increases from top to bottom, so that the arc extinguishing tube body 1 is trumpet-shaped. There are two lightning-connecting poles 2, which are equidistantly embedded in the arc extinguisher body 1; the lightning-connecting poles 2 are circular. The side stage recoil pipe 4 is a straight cylin...

Embodiment 2

[0040] The difference between this embodiment and embodiment 1 is: as figure 2 As shown, the arc extinguishing tube body 1 is further provided with two hollow metal horn rings 3 ; the metal horn rings 3 are equidistantly arranged in the arc extinguishing tube body 1 .

[0041] The purpose of adding the metal horn ring 3 in this implementation is to ensure that the electric arc can enter the arc extinguisher body 1 smoothly by using the metal conductivity to realize the recoil function, and the metal horn ring 3 can also play a role in protecting the arc extinguisher body.

Embodiment 3

[0043] The difference between this embodiment and embodiment 1: as image 3 As shown, the side-stage recoil pipe 4 is trumpet-shaped, and there are more than two.

[0044] In this embodiment, the side-stage recoil pipe 4 is a trumpet type, and the purpose is to increase the density difference, temperature difference, and pressure difference between the inside and outside of the pipe, so that the recoil injection effect of the airflow is stronger, and the trumpet-shaped side-stage recoil pipe 4 The arc extinguishing effect is more obvious.

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Abstract

The invention discloses a multistage horn-shaped backflushing discharge arc extinguishing tube, which comprises an arc extinguishing tube body, lightning arrester electrodes and a side-stage backflushing tube, wherein the side-stage backflushing tube is arranged on the side wall of the arc extinguishing tube body, and is communicated with the arc extinguishing tube body, the lightning arrester electrodes are embedded in the arc extinguishing tube body, and are arranged above and below the side-stage backflushing tube so as to form a semi-closed space in the arc extinguishing tube body, and thediameter of the arc extinguishing tube body is gradually increased from top to bottom, so that the arc extinguishing tube body is trumpet-shaped. According to the invention, the arc extinguishing tube is simple in structure, reasonable in design, high in arc extinguishing capacity and more stable and reliable in work; and the multiple lightning arrester electrodes and the multiple side-stage backflushing tubes are additionally arranged to be matched with one another, so that electric arcs can form multiple breakpoints, electric arc energy is greatly reduced, even the electric arcs are extinguished, and the arc extinguishing device can be used in cooperation with an arc extinguishing lightning arrester.

Description

technical field [0001] The invention relates to a component of a lightning protection device in a power transmission line, in particular to a multi-stage horn type recoil discharge arc extinguishing tube. Background technique [0002] At present, the distribution of power energy and load centers in my country is very uneven, mainly based on coal power generation. Most of the coal resources are concentrated in the northwest region, and the exploitable hydropower resources are mainly concentrated in the west and central regions, while my country's load centers are concentrated in the eastern coastal areas, Beijing-Tianjin-Tangshan and central developed regions. This determines that in order to solve the power problem of the load center in our country, we must vigorously develop hydropower and thermal power generation while building cross-regional, large-capacity and long-distance energy transmission channels. [0003] With the continuous increase of the voltage level of trans...

Claims

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Application Information

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IPC IPC(8): H01T1/08H01T4/02
CPCH01T1/08H01T4/02
Inventor 王嬿蕾王巨丰李籽剑孔佳琦黄上师
Owner 王嬿蕾
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