Semi-closed double-jet-airflow arc extinguishing lightning protection device and application thereof

A technology of jet airflow and lightning protection device, applied in electrical components, spark gaps, spark gap parts and other directions, can solve the problem of poor arc extinguishing lightning protection effect, the technical level of lightning protection device is difficult to achieve in one step, consumption, etc. question

Pending Publication Date: 2020-10-27
段小嬿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, lightning strike accidents are frequent in areas such as overhead transmission and distribution lines, substations, and power plants. The accidents caused by lightning strikes have brought great challenges to the safe, stable and reliable operation of the power system, and have also brought great challenges to the country's economic development and people's living standards. have a huge impact
How to carry out effective arc extinguishing and lightning protection to improve the safety, stability and reliability of the power system has always been the key research content of the power sector. The existing arc extinguishing and lightning protection methods are mainly through the installation of arc extinguishing and lightning protection in the power system lines However, considering the requirements of lightning protection device technology: safety, effectiveness, durability, economy, and maintenance, it is found that it is difficult to achieve one step at the technical level of the existing lightning protection device. in place
[0003] In this regard, the applicant and related inventors conducted a lot of research on the technical requirements of lightning protection devices, and found that the existing lightning protection...

Method used

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  • Semi-closed double-jet-airflow arc extinguishing lightning protection device and application thereof
  • Semi-closed double-jet-airflow arc extinguishing lightning protection device and application thereof
  • Semi-closed double-jet-airflow arc extinguishing lightning protection device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, a semi-enclosed double-jet airflow arc extinguishing lightning protection device includes an arc extinguishing body 4 and a jet air flow assembly 5; A partition 8 is provided, and the partition 8 divides the inner space of the arc extinguishing body 4 into two groups of jet air passages 9, and the partition 8 is provided with a wall electrode 7; the upper end of the jet air passage on the left side is fixed An air jet assembly is installed, and the lower end is an air flow nozzle extending vertically downward; the upper end of the jet air channel on the right is an air flow nozzle extending to the side of the arc extinguishing body, and a jet air assembly is fixedly installed at the lower end; the injection Electrodes 14 are provided on the airflow components; the electrodes 14 are divided into the upper electrode 141 installed on the jet airflow assembly of the jet airflow channel opening vertically downwards and the jet airflow installed on ...

Embodiment 2

[0038] Such as Figure 4 As shown, the structure and principle of this embodiment are basically the same as that of Embodiment 1, the difference is that the wall electrode 7 uses a compressed arc extinguishing tube. The compression arc extinguishing tube adopts a ceramic tube, and an arc-guiding metal ball is placed in the middle of the tube.

[0039] The practical application of this embodiment:

[0040] Install a semi-closed double-jet airflow arc-extinguishing lightning protection device at the low-voltage end 2 of the insulator string 1 of the transmission line through the fixing hardware, and the upper electrode of the semi-closed double-jet airflow arc-extinguishing lightning protection device is directly electrically connected to the fixing hardware; A high-voltage electrode is fixedly installed at the high-voltage end 3 of the insulator string 1 of the transmission line; the lower electrode of the semi-closed double-jet arc-extinguishing lightning protection device po...

Embodiment 3

[0042] Such as Figure 5 As shown, the structure and principle of this embodiment are basically the same as that of Embodiment 1, the difference is that the wall electrode 7 uses a recoil tube. The recoil pipe is a semi-closed pipe with one end open and the other end connected to the lightning pole.

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PUM

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Abstract

The invention discloses a semi-closed double-jet-air-flow arc extinguishing lightning protection device and application thereof. The semi-closed double-jet-air-flow arc extinguishing lightning protection device mainly comprises an arc extinguishing body and a jet air flow assembly, wherein the interior of the arc extinguishing body is of a hollow structure, a partition plate is longitudinally arranged in the middle of the interior of the arc extinguishing body, and divides the internal space of the arc extinguishing body into two sets of airflow jet channels, the upper end of the airflow jet channel on the left side is fixedly provided with an airflow jet assembly, the lower end is provided with an airflow nozzle vertically extending downwards, the upper end of the airflow jet channel at the right side is an airflow nozzle extending towards the side surface of the arc extinguishing body, and the lower end is fixedly provided with an airflow jet assembly. According to the invention, thearc path can be restrained and controlled, and the arc drift hazard is eliminated; and the device has the advantages of wide application range, one-time installation, long-term repeated use, low operation cost and high sensitivity, and is beneficial to electric power safety production.

Description

technical field [0001] The invention belongs to a lightning protection device for power transmission and distribution overhead lines, and relates to a semi-enclosed double-jet airflow arc-extinguishing lightning protection device and its application. Background technique [0002] At present, lightning strike accidents are frequent in areas such as overhead transmission and distribution lines, substations, and power plants. The accidents caused by lightning strikes have brought great challenges to the safe, stable and reliable operation of the power system, and have also brought great challenges to the country's economic development and people's living standards. have a huge impact. How to carry out effective arc extinguishing and lightning protection to improve the safety, stability and reliability of the power system has always been the key research content of the power sector. The existing arc extinguishing and lightning protection methods are mainly through the installati...

Claims

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Application Information

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IPC IPC(8): H01B17/46H01B17/48H01T1/02H01T1/08
CPCH01B17/46H01B17/48H01T1/08H01T1/02
Inventor 王嬿蕾王巨丰杨倩颖张清河彭斐
Owner 段小嬿
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