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Bipolar longitudinal magnetic contact structure and vacuum arc-extinguishing chamber

A vacuum interrupter and longitudinal magnet technology, applied in high-voltage air circuit breakers, electrical components, electrical switches, etc., can solve problems such as arc concentration, and achieve reliable connection, compact structure, and good reliability.

Pending Publication Date: 2021-11-09
PINGGAO GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a bipolar longitudinal magnetic contact structure and a vacuum interrupter to solve the problem of excessive local arc concentration when the contact spacing is small in the opening process of the existing bipolar longitudinal magnetic contact structure

Method used

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  • Bipolar longitudinal magnetic contact structure and vacuum arc-extinguishing chamber
  • Bipolar longitudinal magnetic contact structure and vacuum arc-extinguishing chamber
  • Bipolar longitudinal magnetic contact structure and vacuum arc-extinguishing chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Such as figure 1 and figure 2 As shown, the vacuum interrupter includes an arc-extinguishing chamber shell 11, the arc-extinguishing chamber shell 11 adopts a porcelain shell, and its axial ends are respectively welded and fixed to the static side cover plate 12 and the moving side cover plate 13, and the arc-extinguishing chamber shell 11 A contact assembly is arranged inside, and the contact assembly adopts a bipolar longitudinal magnetic contact structure.

[0066] The bipolar longitudinal magnetic contact structure includes a static contact assembly 21 and a moving contact assembly 31 . The static contact assembly 21 includes a static conductive rod 22 , a static contact piece 23 , and a U-shaped iron core 24 on the static side; The longitudinal sections of the static contact piece 23 and the moving contact piece 33 are both U-shaped, and the U-shaped openings of the two are facing oppositely. The back of the radial center of the static contact piece 23 is welde...

Embodiment 2

[0073] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the moving-side iron core support 35 is a support rod, while in this embodiment, the moving-side iron core support 35 is a support cylinder, and the support cylinder is fixed on Inside the moving side cover plate 13, the moving conducting rod 32 passes through the supporting cylinder. In other embodiments, the moving-side iron core support member 35 may also be in other forms, such as a frame form; in addition, in other embodiments, the number of support rods may be only one, or more than three.

Embodiment 3

[0075] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the support rod is welded and fixed on the movable side cover plate 13, while in this embodiment, the end of the support rod is provided with a flange structure, and the The structural assembly is fixed on the moving end cover.

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Abstract

The invention relates to a bipolar longitudinal magnetic contact structure and a vacuum arc-extinguishing chamber. The bipolar longitudinal magnetic contact structure comprises a static contact assembly which comprises a static conducting rod, a static contact blade and a static side U-shaped iron core, a moving contact assembly which comprises a moving conductive rod, a moving contact blade and a moving side U-shaped iron core, and further comprises a moving side iron core supporting piece which s fixedly connected with the moving side U-shaped iron core and is used for fixing the moving side U-shaped iron core at the moving end of the vacuum arc-extinguishing chamber. A moving contact piece of the moving contact assembly and the moving side U-shaped iron core are arranged in a split mode, and the moving contact piece can be driven by the moving conductive rod to achieve opening and closing. According to the scheme, the problem that local electric arcs are too concentrated when the contact distance is small in the opening process of an existing bipolar longitudinal magnetic contact structure can be solved.

Description

technical field [0001] The invention relates to a bipolar longitudinal magnetic contact structure and a vacuum interrupter. Background technique [0002] Vacuum circuit breakers are widely used in AC power grids in the medium and low voltage field because of their high reliability and environmental friendliness. The vacuum interrupter, as its core component, affects the successful breaking of the vacuum circuit breaker. At present, in order to improve the short-circuit current breaking capability of the vacuum interrupter, the magnetic field control technology of the vacuum arc is usually used, mainly including the transverse magnetic field control technology and the longitudinal magnetic field control technology. For example, the Chinese patent document with the publication number CN110379670B discloses a kind of introduction in the background technology of a high flow capacity vacuum interrupter with a fixed fracture. The current path forms a transverse magnetic field pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/664H01H33/66
CPCH01H33/66H01H33/664
Inventor 王俊章启峰马朝阳王子寒李旭旭王建华孙广雷赵晓民刘庆何创伟李永林龚炳正杨帆胡锦汐毕迎华王铭飞刘先保李潇吴相杰关昕
Owner PINGGAO GRP
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