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Circuit breaker

A technology for circuit breakers and connectors, applied in high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of shortened service life of circuit breakers, poor mechanical properties of nozzle materials, short-circuit faults, etc., and achieve the effect of prolonging service life

Active Publication Date: 2019-01-04
XIAN XD SWITCHGEAR ELECTIC CO LTD +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] When the circuit breaker is working, the high-temperature gas in the arc extinguishing chamber easily flows to the insulating section of the insulating tie rod in the inner cavity. The working environment of the insulating tie rod is in the area of ​​chaotic hot air flow, which easily causes insulation failure and short-circuit faults. At the same time, due to the use of existing technology The mechanical properties of the spout material are poor, so the spout is used as a connection piece of the double-action switchgear interrupter transmission device, and its mechanical reliability is low, resulting in shortened service life of the circuit breaker

Method used

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Embodiment Construction

[0080] The core of the present invention is to provide a circuit breaker with an extended service life.

[0081] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0082] Please refer to Figure 1 to Figure 41 , in a specific embodiment, the circuit breaker provided by the specific embodiment of the present invention includes a spout 9, a first connecting piece 13 on the active side, a second connecting piece 14 on the active side, an insulating connecting piece 10, an arc extinguishing chamber mounting bracket 11, The insulating rod and the protective plate 8 installed on the installation bracket 11 of the arc extinguishing chamber and used to isolate the insulating section of the insulating rod 7 from the inner cavity of the arc extinguishing chamber 4, and the two ends of the insulati...

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Abstract

A circuit breaker including nozzles, the active side first connected member, the active side second connector, insulating connector, Arc extinguishing chamber mounting bracket, An insulate tie rod anda mounting bracket are arranged on that arc extinguishing chamber, and a protective plate for isolating the insulating section of the insulating tie rod from the cavity in the arc extinguishing chamber, At both end of that insulating connector are connected with the active side first connector and the active side second connector respectively, The insulating connector is provided with a through-hole cavity for mounting the nozzle, the nozzle and the insulating connector are fixed coaxially through the first connector on the active side and the second connector on the active side, and the endof the protective plate is slidably matched with the side wall of the insulating tie rod. The service life of the circuit breaker provided by the present application is prolonged.

Description

technical field [0001] The invention relates to the technical field of switching devices, in particular to a circuit breaker. Background technique [0002] The insulating rod of the circuit breaker is located in the supporting structure of the moving side of the circuit breaker. The main function of the insulating rod is to transmit the power of the mechanism to the arc extinguishing chamber, and at the same time isolate the electric energy of the arc extinguishing chamber from the outer casing to prevent the danger of short circuit faults. [0003] The opening and action of the circuit breaker is provided by an external mechanism. The power of the mechanism is powered by 220v voltage to store energy. The arc extinguishing chamber of the circuit breaker bears a higher voltage, so the power provided by the mechanism is transmitted to the arc extinguishing chamber of the circuit breaker by the insulating rod. The insulating tie rod must have high strength to withstand the high...

Claims

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Application Information

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IPC IPC(8): H01H33/91
CPCH01H33/91
Inventor 史俊崔明硕孙会峰陈杳伟杨龙
Owner XIAN XD SWITCHGEAR ELECTIC CO LTD
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