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Lightning protection device for multi-point arc shielding through liquid-electric effect pressure

A liquid-electric effect and lightning protection device technology, which is applied to corona discharge devices, circuits, electrical components, etc., can solve the problems of slow arc extinguishing speed and tripping accidents, and achieve the reduction of overvoltage amplitude and protection against direct lightning strikes Voltage, the effect of prolonging the discharge time

Inactive Publication Date: 2021-11-02
南宁超伏电气科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a lightning protection device with multiple points of hydraulic effect pressure to interrupt the arc, and solve the technical problems of the existing lightning protection and arc extinguishing device, which are slow in arc extinguishing speed and easily cause tripping accidents

Method used

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  • Lightning protection device for multi-point arc shielding through liquid-electric effect pressure
  • Lightning protection device for multi-point arc shielding through liquid-electric effect pressure
  • Lightning protection device for multi-point arc shielding through liquid-electric effect pressure

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Embodiment 2

[0043] The difference between this embodiment and Embodiment 1 is that there are more than two lightning protection devices, several lightning protection devices are fixedly connected end to end, and the bottom end of the bottommost lightning protection device is grounded. This structure is quite completed by superimposing the structure in Embodiment 1, realizing a multi-stage arc extinguishing structure, and having a better arc extinguishing effect.

[0044] The device is equipped with a high-pressure sealing structure and an external reinforcement structure, such as Figure 2-3 shown.

[0045] The high-pressure sealing structure includes a plastic sleeve 21, a stainless steel gasket 22, an O-ring 23, a steel sleeve 24, a sealing silica gel 25, and an extruded fixing block 26. end, the steel sleeve 24 is fastened on the outside of the connection between the sealing silica gel 25 and the ceramic tube, and the plastic sleeve 21 is set on the outside of the steel sleeve 24 and ...

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Abstract

The invention discloses a lightning protection device for multi-point arc shielding through liquid-electric effect pressure, and belongs to the technical field of arc extinguishing and lightning protection. The lightning protection device is set to be a sealing pipe, an upper electrode and a lower electrode are arranged at the two ends of the sealing pipe in a sealed mode respectively, insulating oil is arranged in the sealing pipe, and a skirt edge is arranged on the side edge of the sealing pipe; arc chutes are arranged on the inner side edge of the sealing pipe at intervals, and the transverse length of each arc chute is larger than one half of the inner diameter of the sealing pipe. The electric arc is cut off rapidly, the electric arc discharges in the liquid to generate a liquid-electric effect, impact pressure waves are formed rapidly, and the impact electric arc is cut off immediately when being formed. The reignition of the impact arc is delayed, the continuous discharge condition and the reignition condition are destroyed by high voltage in the ceramic tube, after the impact arc is cut off, the reignition breakdown time is greatly delayed by more than ten to dozens of microseconds, the gradient of lightning current is remarkably reduced by 90%, and the current amplitude is attenuated by more than 50%.

Description

technical field [0001] The invention relates to the technical field of arc extinguishing and lightning protection, in particular to a lightning protection device for multi-point interruption of electric arc by liquid-electric effect pressure. Background technique [0002] Lightning strikes will bring different forms of damage and destruction to power facilities, and thundercloud discharge will cause lightning strike overvoltage in the power system. Lightning overvoltage may cause damage to insulators and transmission lines; the impact flashover caused by lightning strikes on transmission lines will cause flashover of line insulators, and then generate a large power frequency continuous current, damage insulator strings and fittings, and cause line accidents; Electric shock on the transmission line or lightning protection line may cause broken strands or even rupture, making the power transmission work impossible. Therefore, it is necessary to design a lightning protection d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T1/02H01T1/08H01T19/04
CPCH01T1/02H01T1/08H01T19/04
Inventor 王嬿蕾王巨丰骆耀敬宋永锋李浩何琪文贾征浩陈宇宁卢杨
Owner 南宁超伏电气科技有限公司
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