CN108022814A - A kind of miniature circuit breaker arc quenching system - Google Patents
A kind of miniature circuit breaker arc quenching system Download PDFInfo
- Publication number
- CN108022814A CN108022814A CN201711245544.4A CN201711245544A CN108022814A CN 108022814 A CN108022814 A CN 108022814A CN 201711245544 A CN201711245544 A CN 201711245544A CN 108022814 A CN108022814 A CN 108022814A
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- CN
- China
- Prior art keywords
- arc
- circuit breaker
- miniature circuit
- arc extinguishing
- contact portion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of miniature circuit breaker arc quenching system, it includes housing and arc extinction part, and the arc extinction part includes connecting portion, clicking section and arc extinguishing grid pieces portion, and the connecting portion rotation connection on the housing, has initial position and arc extinguishing position；The clicking section, is connected on the connecting portion；The arc extinguishing grid pieces portion, it is connected on the connecting portion, also set up on the both sides leg of the arc extinguishing grid pieces with leachy insulating materials flash barrier, arc insulating apparatus using can the high polymer insulating materials of aerogenesis be process, the electric arc of generation is isolated plate isolation, it will not burn and grid leg, extend the service life of arc extinguishing grid pieces, moving contact and static contact.On the other hand, the high-temperature gas of generation can enter the air gap between each grid leg by venthole, be conducive to reduce arc-chutes air pressure, not only ensure that the excessive rising for reducing metallic vapour but also inhibiting air pressure, and miniature circuit breaker breaking capacity and service life are significantly improved with simple arc extinguishing construction.
Description
Technical field
The present invention relates to a kind of miniature circuit breaker, specifically, the arc quenching system being related in a kind of miniature circuit breaker.
Background technology
Breaker is divided into high-voltage circuitbreaker and low-voltage circuit breaker by its use scope, and high-low pressure identification of boundaries is relatively fuzzyyer,
More than 3kV is generally known as High-Voltage Electrical Appliances.Low-voltage circuit breaker is also known as automatic switch, is commonly called as
" air switch " also refers to low-voltage circuit breaker, it is a kind of existing manual switch effect, but can carry out automatically decompression,
The electric appliance of under-voltage, overload and short-circuit protection.It can be used to distribute electric energy, infrequently start asynchronous motor, to power circuit
And the implementation such as motor protection, when they occur it is serious overload or it is short-circuit and it is under-voltage when failure when can automatic shutdown circuit,
Its function is equivalent to Fuse switch and the combination for crossing underheat relay etc..And generally need not after disjunction fault current
Parts are changed, have been had been widely used.
Miniature circuit breaker, abbreviation MCB, is most popular a kind of terminal protection electricity in building electrical terminal power distribution equipment
Device.Miniature circuit breaker is made of close/open machine, contact portion, protective device, arc quenching system etc..Its operation principle is：Utilize guarantor
Protection unit (buckle releaser) and electrical current heat component realize overload and short-circuit protection, when the electric current that the coil in electrical current heat component passes through is big
When the current value of setting, the dynamic iron core action of magnetictrip, promotes strike bar hitting operation mechanism, makes operating mechanism solution
Lock, makes breaker open operation and then disconnecting circuit, so as to fulfill the overload and short-circuit protection to circuit.After fault is discharged,
Closing operation is carried out by close/open machine so as to connect circuit again.
Miniature circuit breaker arc quenching system deletes chip architecture using arc extinguishing more in the prior art, and the grid that ferromagnetic material makes again may be used
It is divided into body and leg two parts, the latter is used for arc cutting, and the latter is used to strengthen arc blow-out magnetic field.When electric arc is in dynamic and static contact
On light after, the high temperature of electric arc can make the Metal gasification of grid leg and produce metallic vapour.These metallic vapours enter arc gap
The Interruption performance of arc voltage and breaker can be greatly lowered.In order to suppress the generation of metallic vapour, in dynamic and static contact and grid
Piece leg sets the flash barrier made by insulating materials, although being conducive to improve the Interruption performance of breaker, flash barrier draws
Membership reduces arc-chutes and provides the useful space of high-temperature gas expansion, and makes arc-chutes air pressure excessive, causes outer casing rupture, and existing
Some miniature circuit breaker arc quenching systems are complicated, it is necessary to delete the quantity of piece by increase to ensure arc quenching effect, and arc quenching effect
It is nor very reliable and stable.
The content of the invention
Present invention aims at a kind of miniature circuit breaker arc quenching system is provided, solve arc extinguishing in existing miniature circuit breaker and produce
High-temperature gas the problem of making outer casing rupture, arc quenching effect bad and complicated.
To achieve the object of the present invention, the technical solution taken is as follows.
A kind of miniature circuit breaker arc quenching system, it is characterised in that：
It includes housing and arc extinction part, and movable contact portion and stationary contact portion are provided with the housing, and the movable contact portion turns
On the housing, the stationary contact portion is located at the opposite side in the movable contact portion for dynamic connection；The arc extinction part includes connection
Portion, clicking section and arc extinguishing grid pieces portion, the connecting portion rotation connection on the housing, have initial position and arc extinguishing position；
The clicking section, is connected on the connecting portion；The arc extinguishing grid pieces portion, is connected on the connecting portion.
Further, the insulating materials flash barrier of stomata is provided with the both sides leg of the arc extinguishing grid pieces.
Further, there is gap, the movable contact portion is located at the gap between the clicking section and arc extinguishing grid pieces portion
It is interior, and the clicking section can be stirred.
Further, for the connecting portion when arc extinguishing position, the highest point in the arc extinguishing grid pieces portion is higher than the stationary contact
The highest point in point portion.
Further, the clicking section is integrally extended by the connecting portion and is formed, its end uses T-type structure.
Further, during separating brake, the movable contact portion is located at 1.5cm-3cm below the clicking section T-type structure, more excellent
Choosing for 2cm.
Further, the movable contact portion has the first side and the second side at an angle, and the stationary contact portion is located at
First side, the connecting portion and clicking section are located at second side.
The beneficial effects of the present invention are, a kind of miniature circuit breaker arc quenching system, arc extinguishing structure is simple, reliable, and
Occupy little space, it is ensured that the appearance and size of miniature circuit breaker meets code requirement.Arc insulating apparatus using can aerogenesis high polymer insulation
Material is process, and the electric arc of generation is isolated plate isolation, will not be burnt and grid leg, extend arc extinguishing grid pieces, moving contact and
The service life of static contact.On the other hand, the high-temperature gas of generation can have by venthole into the air gap between each grid leg
Beneficial to arc-chutes air pressure is reduced, it so not only ensure that the excessive rising for reducing metallic vapour but also inhibiting air pressure, significantly improve
Miniature circuit breaker breaking capacity and service life.
Brief description of the drawings
Fig. 1 is that (arc extinction part is positioned at going out for an embodiment working state schematic representation of the arc extinction part of the miniature circuit breaker of the present invention
Arc position).
Fig. 2 is an embodiment working state schematic representation of the arc extinction part of the miniature circuit breaker of the present invention (at the beginning of arc extinction part is located at
Beginning position).
Fig. 3 is an example structure schematic diagram of the arc extinction part of the miniature circuit breaker of the present invention.
Fig. 4 is one example structure schematic diagram of arc extinguishing grid pieces portion of the miniature circuit breaker of the present invention.
| 100 | Arc extinction part |
| 110 | Connecting portion |
| 111 | Rotation axis A |
| 120 | Clicking section |
| 130 | Arc extinguishing grid pieces portion |
| 140 | Flash barrier |
| 150 | Grating arc-extinguishing chamber |
| 210 | Movable contact portion |
| 220 | Rotation axis B |
| 300 | Stationary contact portion |
| 400 | Housing |
Embodiment
Case 1 is embodied：
For purposes of illustration only, below in conjunction with the accompanying drawings, elaborate to a kind of miniature circuit breaker arc quenching system of the present invention.Such as
Shown in Fig. 1 to Fig. 3, a kind of miniature circuit breaker arc quenching system, it is characterized in that：It includes housing 400 and arc extinction part 100, the shell
Movable contact portion 210 and stationary contact portion 300 are provided with body 400, the movable contact portion 210 is rotatably connected on the housing 400,
The stationary contact portion 300 is located at the opposite side in the movable contact portion 210, and the arc extinction part includes connecting portion 110, clicking section
120 and arc extinguishing grid pieces portion 130, the connecting portion 110 be rotatably connected on the housing 400, there is initial position and arc extinguishing position
Put；The clicking section 120, is connected on the connecting portion 110；The arc extinguishing grid pieces portion 130, is connected to the connecting portion 110
On.
As can be seen from FIG. 3, the insulating materials flash barrier 140 with venthole is housed on the both sides leg of the arc extinguishing grid pieces.
As can be seen from FIG. 1, there is gap, the movable contact portion 210 between the clicking section 120 and arc extinguishing grid pieces portion 130
In the gap, and the clicking section 120 can be stirred.
As can be seen from FIG. 1, when the connecting portion 110 is located at arc extinguishing position, the highest point in the arc extinguishing grid pieces portion 130 is higher than
The highest point in the stationary contact portion 300.
According to Fig. 1 to Fig. 3, the clicking section 120 is formed by overall extend of connecting portion 110, its end is in T
Type structure.
As can be seen from FIG. 1, during separating brake, the movable contact portion is located at 1.5cm-3cm below the clicking section T-type structure, compared with
To be preferably 2cm, extend the service life for movable contact of knowing clearly.
As can be seen from FIG. 1, the movable contact portion 210 has the first side and the second side at an angle, the stationary contact
300 are located at first side, and the connecting portion and clicking section are located at second side.
The specific work process of the present embodiment is：
For miniature circuit breaker in working status, movable contact portion 210 and stationary contact portion 300 are normally offs, i.e. movable contact portion
210 contact with each other with stationary contact portion 300；Miniature circuit breaker can touch movable contact portion 210 when open circuit is when state, move touch at this time
Point portion 210 is separated with stationary contact portion 300；Movable contact portion 210 can produce voltage difference when being separated with stationary contact portion 300, and then may
Generate electric arc.
During separating brake, when movable contact portion 210 is rotated away from stationary contact portion 300, downward impulse force and the A ends phase of clicking section 120
Contact, drives clicking section to rotate clockwise, the connecting portion 210 being connected with rotation axis turns to arc extinguishing position, at this time connecting portion 110
Arc extinguishing grid pieces portion 130 is driven to be inserted between movable contact portion 210 and stationary contact portion 300, the electric arc of extraction puts out in grating arc-extinguishing chamber 150
Go out, make by A, B end of clicking section 120, movable contact portion 210 is stable in the centre at A, B end；During combined floodgate, movable contact portion 210 is to quiet
In the direction rotation process of contact portion 300, the B ends of clicking section 120 are driven to rotate, and then make the arc extinguishing being connected with connecting portion 110
Grid portion 130 deviates backward, turns to initial position, and movable contact portion 210 is in contact with stationary contact portion 300.
The beneficial effects of the present invention are, a kind of miniature circuit breaker arc quenching system, arc extinguishing structure is simple, reliable, and
Occupy little space, it is ensured that the appearance and size of miniature circuit breaker meets code requirement.Arc insulating apparatus using can aerogenesis high polymer insulation
Material is process, and the electric arc of generation is isolated plate isolation, will not be burnt and grid leg, extend arc extinguishing grid pieces, moving contact and
The service life of static contact.On the other hand, the high-temperature gas of generation can have by venthole into the air gap between each grid leg
Beneficial to arc-chutes air pressure is reduced, it so not only ensure that the excessive rising for reducing metallic vapour but also inhibiting air pressure, significantly improve
Miniature circuit breaker breaking capacity and service life.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of miniature circuit breaker arc quenching system, it includes housing and arc extinction part, and movable contact portion and quiet is provided with the housing
Contact portion, on the housing, the stationary contact portion is located at opposite the one of the movable contact portion for the movable contact portion rotation connection
Side, the arc extinction part include connecting portion, clicking section and arc extinguishing grid pieces portion, and the connecting portion rotation connection on the housing, has
There are initial position and arc extinguishing position；The clicking section, is connected on the connecting portion；The arc extinguishing grid pieces portion, is connected to described
On connecting portion.
2. miniature circuit breaker arc quenching system as claimed in claim 1, it is characterised in that：On the both sides leg in the arc extinguishing grid pieces portion
It is provided with the insulating materials flash barrier of stomata.
3. miniature circuit breaker arc quenching system as claimed in claim 2, it is characterised in that：The clicking section and arc extinguishing grid pieces portion it
Between there is gap, the movable contact portion is located in the gap, and can stir the clicking section.
4. miniature circuit breaker arc quenching system as claimed in claim 3, it is characterised in that：The connecting portion is in arc extinguishing position
When, the highest point in the arc extinguishing grid pieces portion is higher than the highest point in the stationary contact portion.
5. miniature circuit breaker arc quenching system as claimed in claim 3, it is characterised in that：The clicking section is whole by the connecting portion
Body extends and is formed, its end uses T-type structure.
6. miniature circuit breaker arc quenching system as claimed in claim 3, it is characterised in that：Stirred positioned at described in the movable contact portion
1.5cm-3cm below portion's T-type structure.
7. miniature circuit breaker arc quenching system as claimed in claim 3, it is characterised in that：The dynamic electric shock portion is located at the fluctuation
2cm below portion's T-type structure.
8. the miniature circuit breaker arc quenching system as described in any in claim 3,4 or 5, it is characterised in that：The movable contact portion
With the first side and the second side at an angle, the stationary contact portion is located at first side, the connecting portion and clicking section
Positioned at second side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245544.4A CN108022814A (en) | 2017-12-01 | 2017-12-01 | A kind of miniature circuit breaker arc quenching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245544.4A CN108022814A (en) | 2017-12-01 | 2017-12-01 | A kind of miniature circuit breaker arc quenching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108022814A true CN108022814A (en) | 2018-05-11 |
Family
ID=62078019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711245544.4A Pending CN108022814A (en) | 2017-12-01 | 2017-12-01 | A kind of miniature circuit breaker arc quenching system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108022814A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741998A (en) * | 2019-02-27 | 2019-05-10 | 武汉司德宝电气有限公司 | A kind of breaker |
| CN111370247A (en) * | 2020-03-18 | 2020-07-03 | 南通苏源恒炫电气有限公司 | Wall-through type contact seat |
| CN111755299A (en) * | 2019-03-29 | 2020-10-09 | Ls产电株式会社 | Arc extinguishing device of circuit breaker for wiring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2734677B2 (en) * | 1989-08-31 | 1998-04-02 | 松下電工株式会社 | Contact device |
| CN1388547A (en) * | 2001-05-28 | 2003-01-01 | 富士电机株式会社 | Moulded box circuit breaker |
| JP2005129436A (en) * | 2003-10-27 | 2005-05-19 | Matsushita Electric Works Ltd | Circuit breaker |
| CN102290300A (en) * | 2011-07-07 | 2011-12-21 | 西安交通大学 | Grid arc extinguish chamber for low voltage circuit breaker |
| CN206148389U (en) * | 2016-09-12 | 2017-05-03 | 范国平 | Miniature circuit breaker and arc extinguishing spare thereof |
-
2017
- 2017-12-01 CN CN201711245544.4A patent/CN108022814A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2734677B2 (en) * | 1989-08-31 | 1998-04-02 | 松下電工株式会社 | Contact device |
| CN1388547A (en) * | 2001-05-28 | 2003-01-01 | 富士电机株式会社 | Moulded box circuit breaker |
| JP2005129436A (en) * | 2003-10-27 | 2005-05-19 | Matsushita Electric Works Ltd | Circuit breaker |
| CN102290300A (en) * | 2011-07-07 | 2011-12-21 | 西安交通大学 | Grid arc extinguish chamber for low voltage circuit breaker |
| CN206148389U (en) * | 2016-09-12 | 2017-05-03 | 范国平 | Miniature circuit breaker and arc extinguishing spare thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741998A (en) * | 2019-02-27 | 2019-05-10 | 武汉司德宝电气有限公司 | A kind of breaker |
| CN109741998B (en) * | 2019-02-27 | 2024-01-09 | 武汉司德宝电气有限公司 | Circuit breaker |
| CN111755299A (en) * | 2019-03-29 | 2020-10-09 | Ls产电株式会社 | Arc extinguishing device of circuit breaker for wiring |
| US11309158B2 (en) | 2019-03-29 | 2022-04-19 | Ls Electric Co., Ltd. | Arc extinguishing unit of molded case circuit breaker |
| CN111755299B (en) * | 2019-03-29 | 2022-07-05 | Ls产电株式会社 | Arc extinguishing device of circuit breaker for wiring |
| CN111370247A (en) * | 2020-03-18 | 2020-07-03 | 南通苏源恒炫电气有限公司 | Wall-through type contact seat |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180511 |