Vacuum interrupter and its static end components
A vacuum interrupter, static end technology, applied in electrical components, high-voltage air circuit breakers, electrical switches, etc., can solve the problems of complex structure, high cost, large radial size, etc., and achieve the effect of reducing cost and volume
Active Publication Date: 2017-04-05
TIANJIN PINGGAO INTELLIGENT ELECTRIC +3
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Problems solved by technology
Since the main shield is fixed on the inner wall of the insulating shell through a corresponding fixing structure, the structure is complicated. More importantly, in order to ensure the insulation performance and facilitate the installation of the main shield, the radial dimension of the vacuum interrupter in the prior art Larger, more materials for the insulating shell, more difficult to process, and higher cost
Method used
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Embodiment Construction
[0018] An example of a vacuum interrupter in the present invention is Figure 1~Figure 2 As shown, it is a small current double-station vacuum interrupter, including an insulating case 10 in the form of a porcelain case, a static end assembly 20 arranged corresponding to the rear end of the porcelain case, and a dynamic end assembly corresponding to the axial front end of the insulating case 10. end assembly 30 . The static end assembly 20 includes a static cover plate 21, a static end conductive rod 22, a static contact 24, a static contact piece and a main shield 23, and the moving end assembly 30 includes a moving cover plate 31, a moving contact 37, and a moving contact piece , Moving end conductive rod 34 and bellows 35. In terms of material selection, the moving and static contact pieces are made of copper-chromium alloy material, and the conductive rod 34 at the moving end, the conductive rod 22 at the static end, the static cover plate 21 and the main shield 23 are al...
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The invention relates to a vacuum arc-extinguishing chamber and a static end assembly thereof. The vacuum arc-extinguishing chamber comprises the static end assembly and a movable end assembly. The static end assembly comprises a static cover plate, a static end conducting rod and a main shielding cover arranged on the inner side of the static cover plate. The main shielding cover is provided with an inner folded edge bent towards the axis of the main shielding cover, a static end conducting rod penetrating hole with the axis overlapped with the axis of the main shielding cover is arranged at the inner edge of the inner folded edge, and the static end conducting rod penetrates through the static end conducting rod penetrating hole and is fixedly connected with the inner folded edge of the main shielding cover. Thus, the main shielding cover can be fixed through the static end conducting rod and can be prevented from making contact with an insulating shell, a movable contact and a static contact can be axially shielded, the small size can be adopted under the condition of the same insulating performance, and then the size can be reduced and cost can be reduced.
Description
technical field [0001] The invention relates to a vacuum interrupter and its static end assembly. Background technique [0002] Vacuum interrupter is a widely used switching device, which generally includes two types of double-station vacuum interrupter and three-station vacuum interrupter. The existing low-current double-station vacuum interrupter includes an insulating shell, and the axial ends of the insulating shell are respectively provided with a static end assembly and a moving end assembly. The static end assembly includes a static cover plate, a static end conductive rod, a static contact, a static contact piece, and a main shield for covering the moving and static contacts. The static contact piece is arranged between the static contact and the static end conductive rod. Between them, the main shielding cover is fixedly arranged on the inner wall of the insulating shell, and the static cover plate is fixed at the opening of the axially corresponding end of the ins...
Claims
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IPC IPC(8): H01H33/664
CPCH01H33/664
Inventor 李敏王晓琴杨兰索李文艺王南南舒小平孙淑萍葛媛媛林一泓卞志文
Owner TIANJIN PINGGAO INTELLIGENT ELECTRIC