A long-stroke permanent magnet operating mechanism for high-voltage vacuum circuit breakers with auxiliary coils
A vacuum circuit breaker and auxiliary coil technology, which is applied to high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problems of long response time of opening and closing speeds, and achieve the effect of shortening the start-up time and improving the response speed
Active Publication Date: 2017-06-30
SOUTHEAST UNIV
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Problems solved by technology
[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a long-stroke permanent magnet operating mechanism for high-voltage vacuum circuit breakers with auxiliary coils, which solves the problem that the opening and closing speed response time of the three-coil permanent magnet mechanism is too long
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[0022] The present invention will be further described below in conjunction with the accompanying drawings.
[0023] A long-stroke permanent magnet operating mechanism for high-voltage vacuum circuit breakers with auxiliary coils, such as figure 1 As shown, it includes a permanent magnet holding mechanism 2, an electromagnetic drive mechanism 3 and a guide rod 1,
[0024] Described permanent magnet retaining mechanism 2 comprises upper permanent magnet retaining mechanism and lower permanent magnet retaining mechanism, and described upper permanent magnet retaining mechanism and lower permanent magnet retaining mechanism are arranged oppositely, and described upper permanent magnet retaining mechanism and lower permanent magnet retaining mechanism A moving iron core 10 is arranged between them, and a central hole for fixing the guide rod 1 is arranged in the middle of the moving iron core 10; the upper permanent magnet holding mechanism includes a closing static iron core 4, a...
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The present invention discloses a long stroke permanent magnetic actuator with an auxiliary coil for a high-voltage vacuum circuit breaker, belonging to the field of high-voltage vacuum circuit breakers. The long stroke permanent magnetic actuator comprises a permanent magnet maintaining mechanism, an electromagnetic drive mechanism and a guide rod. The permanent magnet maintaining mechanism comprises a closing static core, a closing permanent magnet, an auxiliary opening coil, an opening static core, an opening permanent magnet, an auxiliary closing coil and a maintaining moving core. The electromagnetic drive mechanism comprises a closing coil, a start-buffer coil, an opening coil, a driving static core and a driving moving core. A non-magnetic material gasket is arranged between the permanent magnet maintaining mechanism and the electromagnetic drive mechanism. The outer side wall of the driving moving core is provided with an axial groove. According to the long stroke permanent magnetic actuator, through arranging the auxiliary opening coil and the auxiliary closing coil in the permanent magnet maintaining mechanism, the permanent magnet influence of the permanent magnet mechanism can be rapidly eliminated in action, and thus the response speed of the permanent magnet mechanism is greatly improved.
Description
technical field [0001] The invention relates to a long-stroke permanent magnet operating mechanism for a high-voltage vacuum circuit breaker with an auxiliary coil, belonging to the field of high-voltage vacuum circuit breakers. Background technique [0002] With the advantages of small size, light weight, suitable for frequent operation, and no maintenance for arc extinguishing, vacuum circuit breakers quickly occupied the medium-voltage circuit breaker market and further developed into the high-voltage field. The operating mechanism of the vacuum circuit breaker usually has three types: electromagnetic type, spring type and permanent magnet type. Among them, the permanent magnet operating mechanism has attracted people's attention increasingly due to its advantages of high reliability, low energy consumption, maintenance-free, and synchronous operation. High-voltage vacuum circuit breakers have greater requirements on the opening distance, which requires the operating mec...
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IPC IPC(8): H01H33/666
CPCH01H33/666
Inventor 房淑华蒋佳明林鹤云徐喆明
Owner SOUTHEAST UNIV