A Fast Closing Gap Controlled by Transverse Magnetic Field and Its Application

A technology of transverse magnetic field and rapid closure, applied to spark gaps with auxiliary trigger devices, spark gaps, spark gap components, etc., can solve the problems of restricting the life of controllable gaps and complex electrode discharge mechanisms, and achieve simple structure and high performance Stable and high penetrating effect

Active Publication Date: 2021-11-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of high voltage and high current, the breakdown phenomenon of the gap and the mechanism of electrode discharge are extremely complicated, and the ablation of the gap electrode material by the arc seriously restricts the life of the controllable gap.

Method used

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  • A Fast Closing Gap Controlled by Transverse Magnetic Field and Its Application
  • A Fast Closing Gap Controlled by Transverse Magnetic Field and Its Application
  • A Fast Closing Gap Controlled by Transverse Magnetic Field and Its Application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] This embodiment is a fast closing gap controlled by a transverse magnetic field, and its overall structure is shown as figure 1 As shown; the plasma injector is embedded in the gap electrode, and connected to the control device through high-voltage wires and lead-out terminals.

[0052] The gap body consists of a pair of hollow metal tubes to set the gap electrodes and assemble them in the composite sleeve, which are high-voltage electrodes and low-voltage electrodes respectively; the gap main electrode is embedded with a pair of first rectangular sub-electrodes 4 and second Rectangular sub-electrodes 6 .

[0053] The length of the first rectangular sub-electrode 4 and the second rectangular sub-electrode 6 is 100mm, the width is 80mm, and the thickness is 6mm, and there is a connected short side closely connected with the gap main electrode, and the remaining three sides are not connected with the gap main electrode, The pitch is 1mm. The material of the first rectan...

Embodiment 2

[0058] This embodiment is a fast closing gap controlled by a transverse magnetic field, and its overall structure is shown as figure 1 shown. The plasma injector is embedded in the gap electrode, and is connected with the control device 15 through the high-voltage wire and the lead-out terminal 13 .

[0059] The gap body consists of a pair of hollow metal tubes to set the gap electrodes and assemble them in the composite sleeve, which are high-voltage electrodes 3 and low-voltage electrodes 8 respectively; the gap main electrode is embedded with a pair of first rectangular sub-electrodes 4 and The second rectangular sub-electrode 6 .

[0060] The length of the first rectangular sub-electrode 4 and the second rectangular sub-electrode 6 is 150mm, the width is 90mm, and the thickness is 10mm, and there is a connected short side 16 closely connected with the main electrode of the gap, and the remaining three sides are not connected with the main electrode of the gap , the spaci...

Embodiment 3

[0065] This embodiment is a fast closing gap controlled by a transverse magnetic field, and its overall structure is shown as figure 2 shown. The plasma jet 9 is embedded in the gap electrode, and is connected to the control device 14 through the high-voltage wire and the lead-out terminal 13 .

[0066] The gap body consists of a pair of hollow metal tubes to set the gap electrodes and assemble them in the composite casing, which are the high-voltage electrode 3 and the low-voltage electrode 8 respectively. The gap main electrode is embedded with a pair of first rectangular sub-electrode 4 and second rectangular sub-electrode 6 that can generate a transverse magnetic field to drive arc movement.

[0067] The length of the first rectangular sub-electrode 4 and the second rectangular sub-electrode 6 is 160mm, the width is 120mm, and the thickness is 12mm, and there is a connected short side closely connected with the gap main electrode, and the remaining three sides are not co...

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Abstract

The invention discloses a fast closing gap controlled by a transverse magnetic field and its application. The gap is filled with sulfur hexafluoride or a certain proportion of sulfur hexafluoride and nitrogen mixed gas, which has a certain arc extinguishing ability. The gap body is embedded with a Plasma injector, the plasma injector is connected with the control device, and the control device can drive the plasma injector to eject a high-speed, high-temperature, high-density plasma jet to penetrate and short-circuit the gap electrodes to form a rapid conduction of the gap; the gap body The interior includes a gap main electrode, and a pair of sub-electrodes are correspondingly arranged on the gap main electrode. The sub-electrodes can generate a transverse magnetic field to drive the directional movement of the arc, which can increase the service life of the gap and provide good rapid dielectric recovery strength. The invention has the advantages of simple structure, stable characteristics, fastness, reliability, ability to extinguish arcs and long service life, thereby being able to meet different technical requirements.

Description

technical field [0001] The invention belongs to the technical field of controllable gaps, and in particular relates to a fast closing gap controlled by a transverse magnetic field and an application thereof. Background technique [0002] With the development of the national economy and the increasing demand for electricity, the safe and stable operation of the power system is particularly important. Switches are important elements in power systems. The function of the switch in the power system mainly includes: it can control the operation of the power system normally; it can protect the electrical equipment in the power system; it can connect and disconnect the electrical equipment on the power system; Maintenance of electrical equipment. [0003] In recent years, the development of power systems has increased the requirements for switch performance and accelerated the development and application of new switch technologies. Among them, the controllable gap has been widel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01T2/00H01T1/08H01T1/22
CPCH01T1/08H01T1/22H01T2/00
Inventor 杨兰均魏鹏张永鹏黄易之
Owner XI AN JIAOTONG UNIV
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