Vacuum arc-extinguishing chamber for self pressure equalizing type multi-break vacuum circuit breaker
A vacuum interrupter and vacuum circuit breaker technology, which is applied to high-voltage air circuit breakers, circuits, high-voltage/high-current switches, etc., can solve problems such as the inability to achieve uniform voltage distribution, avoid adverse effects and safety hazards, and have a simple structure , Improve the effect of breaking capacity
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[0018] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solution and the drawings.
[0019] Such as figure 1 As shown, a vacuum interrupter for a self-equalizing multi-break vacuum circuit breaker includes an upper end cover 1, a static contact 2, a ceramic inner shell 3, a BST ceramic shell 4, a shielding cover 5, and a moving contact 6 , Bellows shield 7, bellows 8 and lower end cover 9.
[0020] The BST ceramic shell 4 and the ceramic inner shell 3 are cylindrical hollow structures. The ceramic inner shell 3 is placed in the BST ceramic shell 4. The upper end cover 1 and the lower end cover 9 are connected to the upper and lower ends of the BST ceramic shell 4 and the ceramic shell 3, respectively. Airtight connection constitutes a vacuum airtight space.
[0021] The shielding cover 5 is placed in the ceramic inner shell 3, the static contact 2 is connected with the lower end surface of the upper end cover 1; th...
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