Three-phase individual shielding type breaker
A circuit breaker and shielded technology, which is applied in the field of three-phase independent shielded circuit breakers, can solve the problems of large volume and uneven distribution of electric field at the moving conductive rod, so as to reduce the distance between phases, avoid uneven distribution of electric field, and dismantle The effect of convenience
Pending Publication Date: 2019-03-12
XUJI GRP +2
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Problems solved by technology
[0005] The purpose of the present invention is to provide a three-phase independent shielded circuit breaker to solve the problems of uneven electric field distribution and large volume at the moving conductive rod of the existing vacuum circuit breaker
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[0027] The present invention will be further described below in conjunction with accompanying drawing.
[0028] An embodiment of the three-phase independent shielded circuit breaker of the present invention is Figure 1~Figure 5 As shown, it is a three-phase independent shielded adjustable circuit breaker, including a main frame 10, a three-phase vacuum interrupter 11 and a shielding box 12 corresponding to the three-phase vacuum interrupter 11, and the vacuum interrupter 11 The upper end is the static end, and the lower end is the moving end. The static end and the moving end are respectively fixed on the corresponding supporting beam 15 on the main frame 10 through the first insulator 13 and the second insulator 14 in the form of pillars. The bottom of the shielding box 12 is connected to the main frame. The frame 10 is fixedly connected.
[0029] The vacuum interrupter 11 has a ceramic outer wall, and the ceramic outer wall is wrapped with a silicon rubber insulating layer...
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The invention relates to a three-phase individual shielding type breaker. The three-phase individual shielding type breaker comprises a main frame and vacuum arc-extinguishing chambers; a movable endand a static end of each of the vacuum arc-extinguishing chambers are respectively fixed on the main frame via first and second insulators; the three-phase individual shielding type breaker further comprises a shielding box enclosed at the movable end of each of the vacuum arc-extinguishing chambers; the movable end of each of the vacuum arc-extinguishing chambers is fixedly connected with a top of each of the shielding boxes; and a bottom of each of the shielding boxes is fixedly connected with the main frame. According to the three-phase individual shielding type breaker provided by the invention, by adopting the above technical solutions, the shielding box enclosed at the movable end of each of the vacuum arc-extinguishing chambers can form an independent electric field environment at the movable end of each of the vacuum arc-extinguishing chambers in each phase and takes a shielding effect to the movable end of each of the vacuum arc-extinguishing chambers having irregular structures and shapes, and thus the local electric field distribution is prevented from being non-uniform; and thus, each phase spacing can be reduced, and the size of a vacuum breaker is decreased.
Description
technical field [0001] The invention relates to a three-phase independent shielded circuit breaker. Background technique [0002] At present, the traditional high-voltage circuit breaker adopts the form of handcart vacuum circuit breaker or fixed vacuum circuit breaker. With a frame structure, the switch cabinets using these forms of vacuum circuit breakers are large in size, complex in structure, and very difficult to install and transport. At the same time, the current vacuum interrupter circuit breaker generally adopts the form of solid-sealed pole, which has a relatively complex structure, poor heat dissipation performance, and large size, which is not conducive to the miniaturization of switchgear, and the cost is high. [0003] There are also some circuit breakers in the prior art that are assembled in blocks, such as an indoor high-voltage AC vacuum generator circuit breaker disclosed in a Chinese patent with the authorized announcement number CN203631408U. The main ...
Claims
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Login to View More IPC IPC(8): H01H33/662
CPCH01H33/66261H01H2033/66292
Inventor 李鹏李长鹏王廷华吴小钊曹志民刘辉吴子恒翟贺鹏李克周志洋
Owner XUJI GRP