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Ring Permanent Magnet Strong Transverse Magnetic DC Vacuum Interrupter and DC Vacuum Switch

A vacuum interrupter and permanent magnet technology, applied in high voltage/high current switches, electrical switches, high voltage air circuit breakers, etc., can solve problems such as unfavorable DC breaking and low vacuum DC arc voltage

Active Publication Date: 2020-10-27
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Vacuum DC arc voltage is low, which is not conducive to DC breaking

Method used

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  • Ring Permanent Magnet Strong Transverse Magnetic DC Vacuum Interrupter and DC Vacuum Switch
  • Ring Permanent Magnet Strong Transverse Magnetic DC Vacuum Interrupter and DC Vacuum Switch
  • Ring Permanent Magnet Strong Transverse Magnetic DC Vacuum Interrupter and DC Vacuum Switch

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] figure 1 It is a sectional view of an annular permanent magnet strong transverse magnetic DC vacuum interrupter of the present invention. Such as figure 1 As shown, the DC vacuum interrupter includes a static-side annular permanent magnet assembly mechanism 201, a moving-side annular permanent magnet assembly structure 202, and a vacuum interrupter static-side cover plate 109 welded to the other end of the static-side conductive rod 101. On the edge of the static side cover plate 109 of the vacuum interrupter, the ceramic shell 110 of the vacuum interrupter covering the static side contact combination structure 301 and the static side conductive rod 101 is welded to the bellows 118 in the middle of the movable side conductive rod 108, welded The moving side cover plate 119 of the vacuum interrupter at the lower end of the bel...

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Abstract

A ring permanent magnet strong transverse-magnetic DC vacuum arc extinguish chamber and a DC vacuum switch are disclosed. The DC vacuum arc extinguish chamber includes a vacuum arc extinguish chamberceramic shell, a fixed ring permanent magnet composite structure and a moving ring permanent magnet composite structure arranged on the outer side of the vacuum arc extinguish chamber ceramic shell, and a fixed contact composite structure, a moving contact composite structure and an arc extinguish chamber built-in magnetic conductor which are arranged inside the vacuum arc extinguish chamber ceramic shell. The DC vacuum switch includes a ring permanent magnet strong transverse-magnetic DC vacuum arc extinguish chamber and an operating mechanism matched with the ring permanent magnet strong transverse-magnetic DC vacuum arc extinguish chamber. The vacuum arc extinguish chamber of the invention includes the ring permanent magnet composite structures, a curved magnetic conduction structure matched with the ring permanent magnet composite structures, a ring magnetic conduction structure arranged in the contact structure and the magnetic conductor arranged in the arc extinguish chamber. themagnetic conductive circuit and the magnetic field distribution in the arc gap are optimized, the transverse magnetic field is generated by the ring permanent magnet structure in the arc gap, and themagnetic field generated by the permanent magnet is combined with the magnetic field generated by a contact slotting structure to enhance the action effect of the transverse magnetic field, effectively improve arc voltage of the vacuum arc and realize the DC current breaking of the vacuum arc.

Description

technical field [0001] The invention belongs to the technical field of vacuum circuit breakers and vacuum direct current breaking, and in particular relates to a ring permanent magnet strong transverse magnetic direct current vacuum interrupter and a direct current vacuum switch. Background technique [0002] In order to adapt to changes in the energy structure, promote the development and utilization of new energy sources, and improve the stability of power transmission, multi-terminal direct current transmission technology will surely become the future development trend. Although compared with AC transmission, DC transmission has the advantages of long transmission distance, large transmission capacity, and low loss. However, the development of DC transmission technology is still constrained by many factors such as device cost and new materials. DC circuit breaker is the most important protection equipment in DC transmission system, and its design and manufacturing level ...

Claims

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Application Information

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IPC IPC(8): H01H33/664
CPCH01H33/664
Inventor 马慧刘志远耿英三王建华孙丽琼刘劭玮王静怡
Owner XI AN JIAOTONG UNIV
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