Vacuum circuit breaker, vacuum arc extinguishing chamber thereof and movable conducting rod mounting structure
A vacuum interrupter and vacuum circuit breaker technology, which is applied to high-voltage air circuit breakers, circuits, electric switches, etc., can solve the problem of increased cost of moving conductive rods, effective utilization of unfavorable metal materials, increased vacuum interrupter volume and processing and manufacturing cost and other issues to achieve good economic benefits and reduce processing and manufacturing costs
Active Publication Date: 2015-04-15
TIANJIN PINGGAO INTELLIGENT ELECTRIC
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Problems solved by technology
When the conductive area of the conductive end surface is insufficient, it is necessary to increase the diameter of the movable conductive rod, which will increase the cost of the movable conductive rod, which is not conducive to the effective utilization of metal materials, and even increases the volume and manufacturing of the entire vacuum interrupter. cost
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[0021] Such as figure 2 , 3 The shown vacuum interrupter includes an airtight insulating shell whose axis extends in the left and right directions, and the left and right ends of the airtight insulating shell are respectively provided with a movable end cover 1 and a static end cover, and the static end cover is fixed with Static conduction rod, the movable end cover plate is provided with the installation structure of the movable conduction rod.
[0022] The above-mentioned moving conductive rod installation structure includes a moving conductive rod whose length extends along the left and right directions. The guide sleeve body 3 is sleeved on the moving conductive rod, and the left end surface of the movable conductive rod forms a conductive end surface 8 . The movable conductive rod 4 is provided with a guide keyway 6 whose length extends along the left and right directions, and the left groove wall of the guide keyway is spaced apart from the above-mentioned conductive ...
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The invention relates to a vacuum circuit breaker, a vacuum arc extinguishing chamber thereof and a movable conducting rod mounting structure. The movable conducting rod mounting structure of the vacuum arc extinguishing chamber comprises a movable conducting rod and a guide sleeve. The guide sleeve sleeves the movable conducting rod, the length of the movable conducting rod can be extended along the left-right directions, a conducting end surface is formed on the left end surface of the movable conducting rod, a guide key groove is formed in the movable conducting rod, the length of the guide key groove can be extended along the left-right directions, and the left groove wall of the guide key groove and the conducting end surface are arranged at intervals; a guide protrusion which is used for being arranged in the guide key groove along the radial direction of the movable conducting rod so as to be in guide slide fit with the guide key groove is convexly arranged on the guide sleeve. The vacuum circuit breaker, the vacuum arc extinguishing chamber and the movable conducting rod mounting structure have the advantages that the guide key groove of the movable conducting rod mounting structure does not need to be milled to reach the conducting end surface of the movable conducting rod, accordingly, loss of the area of the conducting end surface of the movable conducting rod can be prevented as compared with a movable conducting rod mounting structure of a comparison article, loss of the diameter of the movable conducting rod and increase of the cost of the movable conducting rod can be prevented, and the vacuum circuit breaker, the vacuum arc extinguishing chamber and the movable conducting rod mounting structure have excellent economic benefits.
Description
technical field [0001] The invention relates to the technical field of vacuum circuit breakers, in particular to a vacuum circuit breaker and its vacuum interrupter and moving conductive rod installation structure. Background technique [0002] In recent years, with the development of solid-sealed poles and ring network cabinet technology, the installation height of vacuum interrupters has gradually decreased. The moving end connection method of the vacuum interrupter has gradually changed from the general conductive clip connection to the sliding (or cone) connection and the end surface connection. [0003] Vacuum interrupters of the prior art, such as figure 1 As shown, it includes the installation structure of the movable conductive rod. The movable conductive rod installation structure includes the movable conductive rod 4, the guide sleeve and the fixed ring. The left end face of the movable conductive rod forms a conductive end face 8. The guide keyway, the left groo...
Claims
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IPC IPC(8): H01H33/66H01H33/664
CPCH01H33/664
Inventor 舒小平王晓琴李文艺李敏杨兰索孙淑萍
Owner TIANJIN PINGGAO INTELLIGENT ELECTRIC