Circuit Breaker Quick Release Mechanism
A technology of tripping mechanism and circuit breaker, which is applied in the direction of protection switch operation/release mechanism, etc., which can solve the problems of slow mechanical response, affecting the breaking stability and breaking capacity of the circuit breaker, and the force of the opening spring is large.
Active Publication Date: 2016-03-30
JIANGSU KAIFAN ELECTRICAL APPLIANCES
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Problems solved by technology
[0002] Under normal working conditions, the medium-voltage DC circuit breaker, the integrated relay protection issues a command to realize quick tripping, guarantees the safety of the system and realizes remote operation. When the circuit breaker encounters a high-current short circuit, it needs to act instantaneously to ensure that the circuit breaker is successfully disconnected instantly. Effectively guarantee the safety of the entire system; the existing circuit breaker opens the operating mechanism through the shunt electromagnet, and uses the opening spring to drag the entire linkage mechanism including the contact device to realize the breaking of the circuit breaker. The opening spring force is large , the mechanical response is slow, which affects the breaking stability and breaking capacity of the circuit breaker
Method used
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[0010] The quick release mechanism of the circuit breaker of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0011] As shown in the figure, the circuit breaker quick release mechanism of the present invention includes a first rotating shaft 2 and a second rotating shaft 3 arranged on the circuit breaker. The top is fixedly installed with the quick-release toggle arm 4 and the first return spring 5 positioned at one side of the quick-release toggle arm 4, the pinch plate toggle arm 1 is hinged with the upper end of an intermediate bracket 15, and the pinch plate half is installed on the intermediate bracket 15. The shaft 17 and the tripping half shaft 16 capable of limiting the buckle half shaft 17, the second return spring 18 is installed on the buckle half shaft 17, and the tripping half shaft 16 is fixedly installed with a bumper located on one side of the middle bracket. The tripping a...
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The invention discloses a disconnector quick-release mechanism. The disconnector quick-release mechanism comprises a first rotating shaft and a second rotating shaft. A buckle plate connecting lever is fixedly installed on the first rotating shaft. A rapid release connecting lever and a first return spring are fixedly installed on the second rotating shaft. The buckle plate connecting lever is hinged to the upper end of a middle support. A buckle plate half shaft and a release half shaft are installed on the middle support. A second return spring is installed on the buckle plate half shaft. An impact release connecting lever and a third return spring are fixedly installed on the release half shaft. A limiting shaft is installed on the middle support. An output connecting lever is hinged to the lower end of the middle support. A fourth return spring is installed on an articulated shaft. A guide block is installed inside the middle support. A pressing plate is connected to the guide block. An energy storage spring is arranged between the pressing plate and the guide block. An output shaft is fixed to the output connecting lever. After the structure is adopted, the disconnection stability and disconnection ability of a disconnector are enhanced, opening spring force is reduced, and the action reliability of an operation mechanism is greatly improved.
Description
technical field [0001] The invention relates to a tripping mechanism used in a medium-voltage DC circuit breaker, in particular to a quick tripping mechanism for a circuit breaker. Background technique [0002] Under normal working conditions, the medium-voltage DC circuit breaker, the comprehensive relay protection issues a command to realize rapid tripping, guarantees the safety of the system and realizes remote operation. When the circuit breaker encounters a large current short circuit, it needs to act instantaneously to ensure that the circuit breaker is successfully disconnected instantly. Effectively guarantee the safety of the entire system; the existing circuit breaker opens the operating mechanism through the shunt electromagnet, and uses the opening spring to drag the entire linkage mechanism including the contact device to realize the breaking of the circuit breaker. The opening spring force is large , The mechanical response is slow, which affects the breaking s...
Claims
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IPC IPC(8): H01H71/10
Inventor 裴军朱忠建周海东邱中军张海龙王成唐建
Owner JIANGSU KAIFAN ELECTRICAL APPLIANCES