CN209071182U - A kind of breaker with permanent magnet - Google Patents
A kind of breaker with permanent magnet Download PDFInfo
- Publication number
- CN209071182U CN209071182U CN201920036074.9U CN201920036074U CN209071182U CN 209071182 U CN209071182 U CN 209071182U CN 201920036074 U CN201920036074 U CN 201920036074U CN 209071182 U CN209071182 U CN 209071182U
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- permanent magnet
- grid
- contact
- arc
- breaker
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
A kind of breaker with permanent magnet, including arc-chutes, moving contact and static contact, arc-chutes include the arc extinguishing grid pieces of multiple arranged stackeds, arc extinguishing grid pieces include grid base portion and grid leg, grid leg is a pair, it is located at the same side at the both ends of grid base portion, feature: static contact is equipped with permanent magnet in the side far from moving contact, moving contact and static contact are located between a pair of of grid leg, grid base portion is located at the outside of moving contact and static contact opening direction, and the line direction of two magnetic poles of permanent magnet is parallel with the extending direction of grid leg.Arc quenching effect is improved by being equipped with permanent magnet below static contact, prevents harm of the arc discharge to breaker.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of breaker with permanent magnet.
Background technique
In existing power supply-distribution system, low-voltage circuit breaker is the main element of power supply-distribution system, is gone out in power supply system
When existing fault current, circuitry cuts can be protected load not by the destruction of fault current.And how quick disengagement failure
Electric current, extinguishing electric arc as early as possible is the important indicator for measuring breaker superiority and inferiority.Wherein, in dc circuit breaker, electric current is more difficult
Extinguish, therefore, extinguishes electric arc as early as possible in dc circuit breaker, become industry Key technique problem urgently to be resolved.
Summary of the invention
The purpose of this utility model is to provide a kind of breakers with permanent magnet, by being equipped with below static contact
Permanent magnet drives arc motion, solves the problems, such as that direct current disjunction is nonpolarity.
What the purpose of this utility model was such to reach, a kind of breaker with permanent magnet, including arc-chutes, dynamic touching
Head and static contact, the arc-chutes include the arc extinguishing grid pieces of multiple arranged stackeds, and the arc extinguishing grid pieces include grid base portion
With grid leg, the grid leg is a pair, is located at the same side at the both ends of grid base portion, the static contact is separate
The side of the moving contact is equipped with permanent magnet, and the moving contact and static contact are between a pair of of grid leg, institute
The grid base portion stated is located at the outside of moving contact and static contact opening direction, the line direction of two magnetic poles of the permanent magnet
It is parallel with the extending direction of grid leg.
In a specific embodiment of the utility model, the static contact is equipped with arc striking piece.
In another specific embodiment of the utility model, the permanent magnet is coated with the outer of insulated heat
Shell.
In another specific embodiment of the utility model, the static contact be equipped with stationary contact, it is described forever
The position of the corresponding stationary contact in the position of magnet.
In another specific embodiment of the utility model, the moving contact is equipped with movable contact, and described is dynamic
Contact is engaged with the stationary contact.
The utility model is due to after adopting the above structure, having the advantages that in disjunction DC low current, regardless of straight
How is the direction of stream, and electric arc can be driven to grid leg and carry out arc extinguishing, in high current, the self-excitation of electric current by the driving of permanent magnet
Field driving electric arc enters grid base portion and carries out arc extinguishing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of first embodiment in the utility model.
Fig. 2 is the structural schematic diagram of second embodiment in the utility model.
Fig. 3 is the side schematic view of arc extinguishing grid pieces, static contact and permanent magnet in the utility model.
Fig. 4 is a kind of operation schematic diagram that electric current flows through in the utility model.
Fig. 5 is the operation schematic diagram that another electric current flows through in the utility model.
In figure: 1. moving contacts, 11. movable contacts；2. static contact, 21. stationary contacts, 22. arc striking pieces；3. permanent magnet, outside 31.
Shell；4. arc extinguishing grid pieces, 41. grid base portions, 42. grid legs.
Specific embodiment
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing, but is not to the description of embodiment
Limitation to technical solution, it is any to change in the form rather than substance that all to should be considered as this practical new according to the utility model design
The protection scope of type.
As shown in Figure 1, Figure 2 and Fig. 3, it the utility model relates to a kind of breaker with permanent magnet, including contact system and goes out
Arc chamber, the arc-chutes are located at the side of contact system, and specifically, the arc-chutes are located at the outer of contact system opening direction
Side.After the contact system is by fault current disjunction, electric arc extinguishes after entering arc-chutes.The contact system includes dynamic
Contact 1 and static contact 2,1 pendulum motion of moving contact, and the static contact 2 is fixed, moving contact 1 is real after swinging
Now with the closure of static contact 2 or separate.It is equipped with movable contact 11 on the moving contact 1, is equipped on the static contact 2 quiet
Contact 21.The movable contact 11 swings with the swing of moving contact 1 and contacts with the stationary contact 21 on the static contact 2
Cooperation.
The arc-chutes include the arc extinguishing grid pieces 4 of multiple arranged stackeds.When moving contact 1 and static contact 2 separate, in institute
Electric arc is generated between the movable contact 11 stated and stationary contact 21, after electric arc generates, opening side from contact system, movement is gone forward side by side outwardly
Enter arc-chutes, specifically, electric arc enters in the arc extinguishing grid pieces 4 of arranged stacked, and extinguishes wherein.The arc extinguishing grid pieces 4 wrap
Include grid base portion 41 and grid leg 42.The grid leg 42 is a pair, is located at the same side at the both ends of grid base portion 41.
The grid base portion 41 is located at the outside of 2 opening direction of moving contact 1 and static contact.
The permanent magnet 3 is equipped in the lower section of static contact 2, it is preferred that described in the position of the permanent magnet 3 is corresponding
The position of stationary contact 21.The permanent magnet 3 is located at the side far from the moving contact 1 of static contact 2.Such setting, keeps away
Exempt from arc contacts to permanent magnet 3, and destroys permanent magnet 3.In order to further increase the protecting effect to the permanent magnet 3,
The permanent magnet 3 is coated with the shell 31 of insulated heat, and the permanent magnet 3 is located at the inside of the shell 31.And
The shell 31, which is protected, can make the permanent magnet 3 from surrounding environment influence.
Continue to see Fig. 1, which is related to the first embodiment of the utility model, and the moving contact 1 and static contact 2 are located at institute
Between a pair of of the grid leg 42 stated, such setting is suitable for direct current breaker of plastic casing, but the protection scope of the utility model is not
It is confined to direct current breaker of plastic casing.After the movable contact 11 and stationary contact 21 separate, electric arc, the permanent magnetism are generated therebetween
The line direction of two magnetic poles of body 3 is parallel with the extending direction of grid leg 42, specifically, the pole N of the permanent magnet 3 can
It can be the present embodiment close to the grid base portion 41 close to the pole S of the grid base portion 41 or the permanent magnet 3
Specific embodiment.
Continue to see Fig. 2, which is related to the second embodiment of the utility model, basic with above-mentioned first embodiment structure
It is identical.The difference is that being equipped with arc striking piece 22 on the static contact 2, the arc striking piece 22 extends to the base portion 41
Place, but be spaced with the base portion 41, electric arc can be helped to rapidly enter in the grid base portion 41 of arc extinguishing grid pieces 4, accelerate electric arc
Extinguish.
Such as Fig. 4, Fig. 5, in first and second above-mentioned embodiment, permanent magnet 3 illustrates the active force of the electric arc
Diagram is subject in figure, direction described below.Be specifically shown in Fig. 4, when the permanent magnet 3 magnetic direction as shown, from
The vertical direction that grid base portion 41 extends to grid leg 42, and the current direction of the electric arc be from paper outwardly direction,
At this point, the magnetic field of permanent magnet 3 generates directed force F to the right to electric arc, the directed force F make arc energy rapidly contact described in
The grid leg 42 on right side, to accelerate the process that electric arc enters arc extinguishing grid pieces 4.Fig. 5 is seen, when the magnetic field side of the permanent magnet 3
To as shown, the vertical direction extended from grid base portion 41 to grid leg 42, and the current direction of the electric arc is to enter
The direction of paper, at this point, the magnetic field of permanent magnet 3 generates active force to the left to electric arc, which makes arc energy rapidly
The grid leg 42 in the contact left side, to accelerate the process that electric arc enters arc extinguishing grid pieces 4.If the two of the permanent magnet 3
Pole line is contrary, then magnetic direction with the magnetic direction in above-mentioned several figures on the contrary, but it is unaffected, electric arc all have to
Therefore the stressed effect of one lateral deviation only needs the two poles of the earth line direction of the permanent magnet 3 parallel with the extending direction of grid leg 42
Just it is able to satisfy requirement.From the description above it is found that the embodiments of the present invention adapt to electric current in breaker direct current simultaneously
The requirement in direction is a kind of non-polar arc quenching system.Preferably adapt to the needs of different occasions.When for low current disjunction,
Electric arc can be pulled in the grid legs 42 of two sides and extinguished by the magnetic field that permanent magnet 3 generates, and when for high current disjunction, electric arc by
The magnetic fields itself generated, which enter in grid base portion 41, to be extinguished.
Claims (5)
1. a kind of breaker with permanent magnet, including arc-chutes, moving contact (1) and static contact (2), the arc-chutes include
The arc extinguishing grid pieces (4) of multiple arranged stackeds, the arc extinguishing grid pieces (4) include grid base portion (41) and grid leg (42), described
Grid leg (42) be a pair, be located at the same side at the both ends of grid base portion (41), it is characterised in that: the static contact
(2) permanent magnet (3) are equipped in the side far from the moving contact (1), the moving contact (1) and static contact (2) are located at institute
Between a pair of of the grid leg (42) stated, the grid base portion (41) is located at the outer of moving contact (1) and static contact (2) opening direction
The line direction of side, two magnetic poles of the permanent magnet (3) is parallel with the extending direction of grid leg (42).
2. a kind of breaker with permanent magnet according to claim 1, it is characterised in that set on the static contact (2)
There are arc striking piece (22).
3. a kind of breaker with permanent magnet according to claim 1, it is characterised in that described permanent magnet (3) outsourcing
It is covered with the shell (31) of insulated heat.
4. a kind of breaker with permanent magnet according to claim 1, it is characterised in that set on the static contact (2)
Have stationary contact (21), the position of the corresponding stationary contact (21) in the position of the permanent magnet (3).
5. a kind of breaker with permanent magnet according to claim 4, it is characterised in that set on the moving contact (1)
Have movable contact (11), the movable contact (11) is engaged with the stationary contact (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920036074.9U CN209071182U (en) | 2019-01-10 | 2019-01-10 | A kind of breaker with permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920036074.9U CN209071182U (en) | 2019-01-10 | 2019-01-10 | A kind of breaker with permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209071182U true CN209071182U (en) | 2019-07-05 |
Family
ID=67102781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920036074.9U Active CN209071182U (en) | 2019-01-10 | 2019-01-10 | A kind of breaker with permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209071182U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252824A1 (en) * | 2021-06-03 | 2022-12-08 | 厦门宏发开关设备有限公司 | Breaking device |
-
2019
- 2019-01-10 CN CN201920036074.9U patent/CN209071182U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252824A1 (en) * | 2021-06-03 | 2022-12-08 | 厦门宏发开关设备有限公司 | Breaking device |
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