CN205452094U - Low -voltage circuit breaker who has free arc extinguishing function that disappears - Google Patents
Low -voltage circuit breaker who has free arc extinguishing function that disappears Download PDFInfo
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- CN205452094U CN205452094U CN201620188614.1U CN201620188614U CN205452094U CN 205452094 U CN205452094 U CN 205452094U CN 201620188614 U CN201620188614 U CN 201620188614U CN 205452094 U CN205452094 U CN 205452094U
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- arc
- disappears
- circuit breaker
- free arc
- free
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Abstract
The utility model relates to a low -voltage circuit breaker who has free arc extinguishing function that disappears. It is including linking firmly the semi -closed arc -Quenching system on the circuit breaker base, there is a square hole on one side of the butt joint explosion chamber, the low -voltage circuit breaker free arc control device that disappears has been inserted in the square hole, it comprises its the device base and the free arc extinguishing bars device that disappears, the device base is close to butt joint explosion chamber one side has four elastic hook, the free arc extinguishing bars device that will disappear links firmly in the device base, the free arc control device base rear side wallboard that disappears is the outer wall wallboard including downward extension can be sealed the static contact, and there are four elastic hook and have at the top of device base and to link firmly at the base of circuit breaker and the U type slot of covering installing the base. The utility model discloses owing to the design of having adopted elastic hook, make the free arc extinguishing system that disappears very convenient when installation and dismantlement, and improved the arc extinguishing efficiency of circuit breaker when dividing disconnected higher short -circuit current, accord with the modular theory and the integrated system variety demand of product design.
Description
Technical field
This utility model belongs to a kind of low-voltage circuit breaker, particularly relates to a kind of low-voltage circuit breaker having the free arc-suppression function that disappears.
Background technology
Continuous progress along with power supply grid technology, system circuit design capacity is more and more higher, require existing chopper volume the most integrated and miniaturization, short-circuit current breaking capacity improves constantly, generally inevitably cause chopper when carrying out more than 50kA short-circuit current disjunction, electric arc that the arc quenching system of original circuit breaker internal produces when can not all eliminate by short circuit breaking and high temperature free gas (arc flame), understand some charged particle and free gas (arcing) is ejected outside the body of chopper；And voltage switchgear be ensure chopper be short-circuited disjunction time ejection charged particle and free gas do not result in circuit breaker electric source and be short-circuited or cause mains side to switch cubicle second short circuit, switch cubicle must reserve enough safe distances, and then increase the size of switch cubicle, cause the unnecessary waste of switch cubicle, with integrated system volume to miniaturization, tight type is drawn close and is deviated from mutually, and produces the cabinet metal material wasting of resources and economic loss；And in closed cabinet body or stuffy obstructed environment, its charged particle and free gas likely cause insulated electric conductor member combusts, produce a large amount of toxic gas or cause the drastically reaction of the chemical composition in air to cause serious accident, causing economy and personal casualty loss.
Summary of the invention
This utility model provides a kind of low-voltage circuit breaker having the free arc-suppression function that disappears that can effectively eliminate free gas for solving technical problem present in known technology.
nullThis utility model is adopted the technical scheme that by solving technical problem present in known technology: a kind of low-voltage circuit breaker with the free arc-control device that disappears，It includes the semiclosed contact arc-extinguishing system being connected on circuit breaker base，Described semiclosed contact arc-extinguishing system includes the moving contact being integrated in two mutual mirror image docking arc-extinguish chambers、Static contact and arc-chute，A square hole is had in described docking arc-chutes side，It is inserted into a low-voltage circuit breaker at described square hole to disappear free arc-control device，The described free arc-control device that disappears is made up of device pedestal and the free arc extinguishing grid device that disappears，The described free arc-control device pedestal that disappears has four elastic hooks near the side of described docking arc-chutes，Disappear in free arc-control device pedestal described in the free arc-chute that disappears can being connected in，Described disappear free arc-control device pedestal with the free arc-control device pedestal wallboard that disappears described in the contrary side, side of docking arc-chutes be one extend downwards the described static contact being fixed on described circuit breaker base can be enclosed in interior outer wall wallboard，Also there are four elastic hooks and have a U-shaped slot described free arc-control device pedestal that disappears can being connected on the base and cover of chopper at the described top disappearing free arc-control device pedestal simultaneously.
This utility model has the advantage that with good effect: owing to have employed the design of elastic hook so that the free arc quenching system that disappears is very convenient when installation and removal, meets modular theory and the integrated system diversity requirement of current product design.And, coordinate the design of the U-shaped slot on the device pedestal top of the free arc quenching system that disappears, stable for the free arc quenching system that disappears is arranged on killer switch, movement will not be produced.And on the premise of not affecting killer switch, installation, dismounting that can be random be even in particular cases replaced at some.Additionally, the present invention utilizes device base construction to design, when the bigger short circuit current of disjunction, electric arc produced by contact system has manufactured a relatively independent arcing passage, and add special arc extinguishing post in the channel and arc extinguishing that one group of perforate offsets one from another deletes sheet, enhance the suction arc ability of chopper, improve the chopper arc extinguishing efficiency when the higher short circuit current of disjunction, flashover distance is zero, provides for low-voltage complete device and safely and effectively ensures.
Accompanying drawing explanation
Fig. 1 is one of structural representation of chopper of the present utility model；
Fig. 2 is the schematic diagram of free arc-control device of disappearing；
Fig. 3 is the left view of Fig. 1；
Fig. 4 is semiclosed contact arc-extinguishing system schematic diagram；
Fig. 5 is the free arc-chute schematic diagram that disappears.
Detailed description of the invention
For summary of the invention of the present utility model, feature and effect can be further appreciated that, hereby enumerate following example, and it be as follows to coordinate accompanying drawing to describe in detail:
nullSuch as Fig. 1、2、3、4、Shown in 5，The shell of chopper is made up of pedestal 1 and lid 4，Semiclosed contact arc-extinguishing system 12 is connected on pedestal 1，And semiclosed contact arc-extinguishing system 12 includes the moving contact 6 that is integrated in two mutual mirror images docking arc-extinguish chambers 5、Static contact 8 and arc-chute 7，A square hole 13 is had in docking arc-extinguish chamber 5 side，Square hole 13 has been inserted into one end with the free arc-chute 2 that disappears of the free arc-control device 9 that disappears，The free arc-control device 9 that disappears is made up of device pedestal 3 and the free arc extinguishing grid device 2 that disappears，Four elastic hooks 10 are had near the side of docking arc-extinguish chamber 5 at device pedestal 3，And the free arc extinguishing grid device 2 that disappears can be connected in device pedestal 3 by elastic hook 10，The squab panel 17 of the opposite side contrary with free arc-chute 15 one end that disappears of device pedestal 3 is for downwardly extending，The static contact 8 of the semiclosed contact arc-extinguishing system 12 being fixed on circuit breaker base 1 can be closed，And also four elastic hooks 11 and have a U-shaped slot 16 on the top of device pedestal 3，Device pedestal 3 can be connected on pedestal 1 and the lid 4 of chopper by elastic hook 11 and U-shaped slot 16，The free arc-control device 9 that makes to disappear preferably docks be integrated into a whole with circuit breaker base 1 and lid 4 thereof.
As shown in Figure 1,3, owing to have employed elastic hook and the design of U-shaped slot, make stable being arranged on killer switch of free arc-control device 9 that disappear, movement will not be produced, and it is very convenient when installation and removal, meet the modular theory of current product design, and highly versatile, cost-effective.On the premise of not affecting breaker body switch, the free arc-control device that will disappear that can be random is installed, dismounting is even in particular cases replaced at some.
Such as Fig. 1, 2, 3, 4, shown in 5, the present invention is designed by the structure of semiclosed contact arc-extinguishing system 12 and the free arc-control device 9 that disappears, when the bigger short circuit current of disjunction, electric arc produced by contact system has manufactured a relatively independent arcing passage, and in the channel, in addition to original arc-chute 7, add special arc extinguishing post 14 and arc extinguishing that one group of perforate offsets one from another deletes sheet 15, so greatly strengthen the suction arc ability of chopper, improve the chopper arc extinguishing efficiency when the higher short circuit current of disjunction, electric arc is i.e. off at circuit breaker internal, will not blow to outside Shell of circuit breaker, and then reach the purpose without arcing, provide for low-voltage complete device and safely and effectively ensure.
Claims (1)
- null1. the low-voltage circuit breaker having the free arc-suppression function that disappears，It includes the semiclosed contact arc-extinguishing system being connected on circuit breaker base，Described semiclosed contact arc-extinguishing system includes the moving contact being integrated in two mutual mirror image docking arc-extinguish chambers、Static contact and arc-chute，A square hole is had in described docking arc-chutes side，It is characterized in that: be inserted into a low-voltage circuit breaker at described square hole and disappeared free arc-control device，The described free arc-control device that disappears is made up of device pedestal and the free arc extinguishing grid device that disappears，The described free arc-control device pedestal that disappears has four elastic hooks near the side of described docking arc-chutes，Disappear in free arc-control device pedestal described in the free arc-chute that disappears can being connected in，Described disappear free arc-control device pedestal with the free arc-control device pedestal wallboard that disappears described in the contrary side, side of docking arc-chutes be one extend downwards the described static contact being fixed on described circuit breaker base can be enclosed in interior outer wall wallboard，Also there are four elastic hooks and have a U-shaped slot described free arc-control device pedestal that disappears can being connected on the base and cover of chopper at the described top disappearing free arc-control device pedestal simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188614.1U CN205452094U (en) | 2016-03-11 | 2016-03-11 | Low -voltage circuit breaker who has free arc extinguishing function that disappears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188614.1U CN205452094U (en) | 2016-03-11 | 2016-03-11 | Low -voltage circuit breaker who has free arc extinguishing function that disappears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205452094U true CN205452094U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620188614.1U Active CN205452094U (en) | 2016-03-11 | 2016-03-11 | Low -voltage circuit breaker who has free arc extinguishing function that disappears |
Country Status (1)
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| CN (1) | CN205452094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609388A (en) * | 2016-03-11 | 2016-05-25 | 天津市百利电气有限公司 | Low-voltage circuit breaker with deionized arc-extinguishing device |
-
2016
- 2016-03-11 CN CN201620188614.1U patent/CN205452094U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609388A (en) * | 2016-03-11 | 2016-05-25 | 天津市百利电气有限公司 | Low-voltage circuit breaker with deionized arc-extinguishing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |