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A circuit breaker housing and a circuit breaker with the housing

A circuit breaker and casing technology is applied in the field of circuit breaker casings and circuit breakers with the casings, which can solve problems such as potential safety hazards of circuit breakers, achieve stable arc extinguishing performance, improve breaking capacity and use safety , the effect of improving segmentation capability and security performance

Active Publication Date: 2018-06-12
欧迪森电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The so-called prevention of the reverse discharge of the arc during the breaking process of the technical solution only plays a role in resisting the arc through the arc-shaped isolation rib, but it cannot fundamentally prevent the occurrence of back breakdown, so the circuit breaker still has safety. Hidden danger

Method used

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  • A circuit breaker housing and a circuit breaker with the housing
  • A circuit breaker housing and a circuit breaker with the housing
  • A circuit breaker housing and a circuit breaker with the housing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as Figure 1-3 Said, a circuit breaker housing includes a first housing a1 and a second housing a2 that have the same shape and size and constitute a complete circuit breaker housing, both of which form an operating mechanism housing area 10 and a wiring assembly housing Area, arc extinguishing chamber accommodation area 12, arc pilot accommodating area 13, and wall member 6, wall member 6, wall member 6 of the first shell a1 is surrounded by at least one ventilation channel 14, and wall of the second shell a2 At least one vent passage 14 is formed around the member 6, and the wall members 6 of both are provided with an arc inlet 61 connecting the vent passage 14 and the arc extinguishing chamber containing area 12.

[0050] Such as figure 1 , figure 2 As shown, the first housing a1 is integrally formed with several main anti-breakdown protrusions 21, and a main arc extinguishing grid positioning gap 31 is formed between every two adjacent main anti-breakdown protrusi...

Embodiment 2

[0055] The difference from Embodiment 1 is that the circuit breaker housing is not divided into two parts, but is integrally formed using 3D printing technology, that is, the arc extinguishing grid positioning protrusion 23 and the second housing a2 are integrated.

Embodiment 3

[0057] The difference from Embodiment 1 is that the primary anti-breakdown protrusions 21 and the secondary anti-breakdown protrusions 22 are arranged in parallel, that is, the height of the main arc extinguishing grid positioning gap 31 = the secondary arc extinguishing grid positioning gap 32 height = the secondary arc extinguishing Grid positioning gap 33 = height of actual arc extinguishing grid positioning gap 34.

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Abstract

The invention discloses a circuit breaker shell and a circuit breaker equipped with the same. At least two ventilating channels are formed between an access terminal accommodating region and an arc extinguish chamber accommodating region. Electric arc passes through the arc extinguish chamber and then enters the multiple ventilating channels through an electric arc inlet, so that the probability of re-arcing is lowered and the electric arc maintaining time is shortened; and therefore, the back breakdown phenomenon of the circuit breaker can be prevented fundamentally, and the breaking capability and the safety of the circuit breaker in use are improved.

Description

Technical field [0001] The present invention relates to a circuit breaker, and more specifically, to a circuit breaker casing and a circuit breaker with the casing. Background technique [0002] Low-voltage circuit breakers are one of the most commonly used electrical products in low-voltage power distribution systems. In order to obtain a higher arc voltage, the grids of the arc extinguishing chamber of the circuit breaker are arranged closely. In this way, the resistance of the arc when it enters the arc extinguishing chamber is relatively large, and the stagnation time at the entrance of the grid is also relatively long. Research on low-voltage circuit breakers in recent years has shown that the arc appears inside and outside the grid multiple times at the entrance of the grid, resulting in repeated drops in the arc voltage, which is the phenomenon of back-side breakdown. It reduces the breaking performance of the circuit breaker and increases the arcing time. [0003] After ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/02H01H71/08H01H71/00
CPCH01H71/00H01H71/02H01H71/08
Inventor 严剑峰邓志彬
Owner 欧迪森电气有限公司
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