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Shrinkage-type arc extinguishing mechanism for power circuit breaker

A circuit breaker and electric power technology, applied in the direction of circuits, electric switches, electrical components, etc., can solve the problems of ablation contact points, damage and loss of the shell of the power circuit breaker, and achieve the effect of accelerating cooling and good use effect

Active Publication Date: 2017-08-11
南京全屋电器开关有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A power circuit breaker is a switch that protects the short circuit, overload and leakage of the circuit in the electric power. It can cut off the circuit when the circuit short circuit, overload and leakage occur. The circuit is connected or closed. A high-temperature and high-heat arc will be generated between the moving contact and the static contact. If the arc cannot be exported quickly and extinguished, it will ablate the contact point between the two contacts and cause serious damage to the housing of the power circuit breaker. Large damage, more importantly, the arc will delay the disconnection of the circuit, causing irreparable losses; Short circuit is very important

Method used

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  • Shrinkage-type arc extinguishing mechanism for power circuit breaker
  • Shrinkage-type arc extinguishing mechanism for power circuit breaker
  • Shrinkage-type arc extinguishing mechanism for power circuit breaker

Examples

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Embodiment Construction

[0018] Such as figure 1 , 2 As shown, it includes cylinder air outlet 1, cylinder 2, push rod 3, swing rod shaft 4, swing rod 5, push rod hinge 6, push rod sliding sleeve 7, electric fixed end 8, arc guide plate 9, air hole 10, the first One inner plate 11, the first outer plate 12, the second outer plate 13, the second inner plate 14, fins 15, shrink tube 16, piston 17, wherein as figure 1 As shown, the swing rod 5 is installed on the swing rod shaft 4, the push rod sliding sleeve 7 is installed on the swing rod 5 and slides on the swing rod 5, the push rod 3 is installed on the push rod sliding sleeve 7 through the push rod hinge 6, The piston 17 is installed in the cylinder 2 and fixedly connected with one end of the push rod 3, and the air outlet 1 of the cylinder is installed at the bottom of the cylinder 2; The second inner plate 14 is installed at 70 degrees, and the first inner plate 11 is in the inner layer of the first outer plate 12, and the second inner plate 14 ...

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PUM

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Abstract

The invention belongs to the technical field of power circuit breakers, and especially relates to a shrinkage-type arc extinguishing mechanism for a power circuit breaker. The mechanism comprises an air cylinder, a push rod, a swinging rod, a power fixed end, an electric car guide plate, outer plates, inner plates, a fin, and a piston, wherein the swinging rod and the power fixed end are separated to generate an arc, and the arc moves to the fin. Meanwhile, the swinging rod pushes the piston to compress air to enter an air channel which is formed by the first outer and first inner plates and the second outer and inner plates, and the air flows into a cavity formed by the first and second inner plates through an air hole. When the arc makes contact with the fin, an insertion piece of the fin enables the arc to be isolated, and the discharged air carries out the cooling of the fin and the arc. The two sides can enable the arc to be fully cooled, and to be quickly distinguished. In addition, the insertion piece at the rear end of the fin can prevent arcs from joining together again, and enables the separated arcs to be further isolated by the fin at the rear end. The mechanism is better in use effect.

Description

[0001] Technical field [0002] The invention belongs to the technical field of power circuit breakers, in particular to a retractable arc extinguishing mechanism of a power circuit breaker. Background technique [0003] A power circuit breaker is a switch that protects the short circuit, overload and leakage of the circuit in the electric power. It can cut off the circuit when the circuit short circuit, overload and leakage occur. The circuit is connected or closed. A high-temperature and high-heat arc will be generated between the moving contact and the static contact. If the arc cannot be quickly exported and extinguished, it will ablate the contact point between the two contacts and cause serious damage to the power circuit breaker shell. Large damage, more importantly, the arc will delay the disconnection of the circuit, causing irreparable losses; Short circuit is very important. In order to further increase the extinguishing effect on the sudden large current arc, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/30H01H9/34
CPCH01H9/30H01H9/34
Inventor 金平娣
Owner 南京全屋电器开关有限公司
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