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Transverse magnetic field controlled quick closing gap and application thereof

A transverse magnetic field, fast closing technology, applied to spark gaps, spark gaps, spark gap components and other directions with auxiliary triggering devices, can solve the problems of complex electrode discharge mechanism, restricting the life of controllable gaps, etc. Simple structure and small drop in dielectric strength

Active Publication Date: 2020-09-25
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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  • Transverse magnetic field controlled quick closing gap and application thereof
  • Transverse magnetic field controlled quick closing gap and application thereof
  • Transverse magnetic field controlled quick closing gap and application thereof

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 transverse magnetic field controlled quick closing gap and an application thereof. The gap is filled with sulfur hexafluoride or a mixed gas of sulfur hexafluoride and nitrogen in a certain proportion and has certain arc extinguishing capacity, a plasma ejector is embedded in a gap body and is connected with a control device, and the control device can drive the plasma ejector to eject the high-speed, high-temperature and high-density plasma jet flow to penetrate through and be in short connection with a gap electrode, so that the rapid conduction of the gap is formed. A gap main electrode is arranged in the gap body, and a pair of sub-electrodes are correspondingly arranged on the gap main electrode and can generate a transverse magnetic field to drive an electric arc to directionally move, so that the service life of the gap can be prolonged, and the good rapid medium recovery strength is provided. The transverse magnetic field controlled quick closing gap is simple in structure and stable in characteristic and has the advantages of being rapid and reliable, being capable of extinguishing arc and being long in service life, and therefore different technical requirements can be met.

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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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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