CN209561273U - A kind of AC circuit breaker structure - Google Patents
A kind of AC circuit breaker structure Download PDFInfo
- Publication number
- CN209561273U CN209561273U CN201920731292.4U CN201920731292U CN209561273U CN 209561273 U CN209561273 U CN 209561273U CN 201920731292 U CN201920731292 U CN 201920731292U CN 209561273 U CN209561273 U CN 209561273U
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- grid
- shell
- arc
- moving contact
- chute
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Abstract
A kind of AC circuit breaker structure, comprising: static contact, moving contact, arc-chute and shell；The static contact is fixedly mounted on outer casing underpart, and moving contact is mounted on right above static contact by the way that shell is up and down；Moving contact mounting hole is equipped in the middle part of the arc-chute, moving contact installs bore dia and is greater than moving contact diameter, and arc-chute is fixedly mounted on static contact top by shell and is located at moving contact mounting hole right above static contact, and moving contact is mounted in moving contact mounting hole；The arc-chute includes 2 or more the grid being parallel to each other；The grid includes left grid and right grid；There are gaps between the left grid and right grid；The left grid and right grid are permanent magnet；The left grid and right grid it is opposite face pole polarity it is opposite.To solve existing breaker when encountering extra-high piezoelectricity, because the higher arc quenching effect of voltage is not fine problem.
Description
Technical field
The utility model relates to electric power tool field more particularly to a kind of AC circuit breaker structures.
Background technique
Existing AC circuit breaker structure generally includes static contact, moving contact, arc-chute and shell；The static contact is fixed
It is mounted on outer casing underpart, moving contact is mounted on right above static contact by the way that shell is up and down；It is equipped in the middle part of the arc-chute dynamic
Contact mounting hole, moving contact install bore dia and are greater than moving contact diameter, and arc-chute is fixedly mounted on static contact top by shell
And it is located at moving contact mounting hole right above static contact, moving contact is mounted in moving contact mounting hole；The arc-chute includes 2
The grid being parallel to each other above.
Arc quenching principle is that the sheet metal that many is parallel to each other is placed in electric arc, and electric arc is divided into several short arcs, utilizes friendship
The proximal pole pressure drop of the nearly cathode effect and direct-current arc of galvanic electricity arc come achieve the purpose that extinguish electric arc.But this breaker is being met
When to extra-high piezoelectricity, because the higher arc quenching effect of voltage is not fine.
Summary of the invention
Technical problem to be solved by the utility model is: a kind of AC circuit breaker structure is provided, to solve the above problems.
The technical solution of the utility model is: a kind of AC circuit breaker structure, comprising:
Static contact, moving contact, arc-chute and shell；
The static contact is fixedly mounted lower part inside the shell, moving contact is up and down be mounted on it is outer right above static contact
In shell；
Moving contact mounting hole is equipped in the middle part of the arc-chute, moving contact installs bore dia and is greater than moving contact diameter, arc-chute
Static contact top is fixedly mounted on by shell and is located at moving contact mounting hole right above static contact, and moving contact is mounted on dynamic touching
In head mounting hole；
The arc-chute includes 2 or more the grid being parallel to each other；
The grid includes left grid and right grid；
There are gaps between the left grid and right grid；
The left grid and right grid are permanent magnet；
The left grid and right grid it is opposite face pole polarity it is opposite.
Spacing increases at multiple from lower to upper between two adjacent grid of the arc-chute.
The shell is the cylindrical body of inner hollow, cylindrical body and extraneous sealing, envelope filled full sulfur hexafluoride.
The shell further includes cooling pipe；
Housing interior volume where the cooling pipe upper end connection arc-chute lower part grid, the connection of cooling pipe lower end
Between the adjacent grid of the last two panels in arc-chute top, shell exterior is located in the middle part of cooling pipe.
The cooling pipe material is high-temperature insulation ceramics.
The cooling pipe upper end diameter is less than cooling pipe lower end diameter.
The cooling pipe includes 3；
The cooling pipe top and bottom are evenly distributed on shell one week.
3 outlet-inclined impeller vanes of cooling pipe upper end wall inside the shell, circumcircle composed by 3 outlet-inclined impeller vane directions
It is coaxial with shell.
The beneficial effects of the utility model are:
Compared with prior art, the magnetic field being parallel to the horizontal plane that the utility model is generated by left grid and right grid,
Electric arc is set mutually to be hung down with magnetic field interaction by Lorentz force, Lorentz force and magnetic field line and movement velocity during the motion
Directly, so that electric arc be made to generate movement in the horizontal direction due to stress in the horizontal direction, so that arc motion total distance increases, from
And reaching arc quenching effect, the utility model is more preferable for extra-high piezoelectricity arc quenching effect.
Detailed description of the invention
Fig. 1 is the front view of the utility model；
Fig. 2 is the cross-sectional view of the Section A-A of the utility model；
Fig. 3 is the cross-sectional view of the section B-B of the utility model；
Fig. 4 is the perspective view of the utility model；
Fig. 5 is charging particle movement schematic diagram in the electric arc of the utility model；
In figure: 1 static contact, 2 moving contacts, 3 arc-chutes, 301 grid, 3011 moving contact mounting holes, 3012 left grid, 3013
Right grid, 4 shells, 5 cooling pipes, 6 charged particles, 7 positively charged Particles Moving tracks, 8 magnetic directions.
Specific embodiment
With reference to the accompanying drawing and utility model is described further in specific embodiment:
Referring to figs. 1 to Fig. 5, a kind of AC circuit breaker structure, comprising:
Static contact 1, moving contact 2, arc-chute 3 and shell 4；
The static contact 1 is fixedly mounted on the lower part in shell 4, and moving contact 2 is up and down to be mounted on right above static contact 1
Shell 4 in；
Moving contact mounting hole 3011 is equipped in the middle part of the arc-chute 3, it is straight that 3011 diameter of moving contact mounting hole is greater than moving contact 2
Diameter, arc-chute 3 by shell 4 be fixedly mounted on 1 top of static contact and make moving contact mounting hole 3011 be located at static contact 1 just on
Side, moving contact 2 are mounted in moving contact mounting hole 3011；
The arc-chute 3 includes 2 or more the grid 301 being parallel to each other；
The grid 301 includes left grid 3012 and right grid 3013；
There are gaps between the left grid 3012 and right grid 3013；
The left grid 3012 and right grid 3013 are permanent magnet；
The left grid 3012 and right grid 3013 it is opposite face pole polarity it is opposite.
As shown in figure 5, when work, the magnetic field being parallel to the horizontal plane generated by left grid 3012 and right grid 3013,
The positively charged particle 7 in electric arc is set to interact during the motion with magnetic field 8 by Lorentz force F, Lorentz force F and magnetic field
8 and movement velocity v is mutually perpendicular to, thus make positively charged particle 7 in electric arc due to stress in the horizontal direction and in the horizontal direction
Movement is generated, so that the positively charged particle 7 in electric arc moves total distance and increases, thus reach arc quenching effect, the utility model pair
It is more preferable in extra-high piezoelectricity arc quenching effect.
Spacing increases at multiple from lower to upper between two adjacent grid 301 of the arc-chute 3.In 3 lower part of arc-chute,
Due to being closer between moving contact 2 and static contact 1, electric arc can be divided into using the grid 301 of comparatively dense by many segments, one
Being can be repeatedly using nearly negative effect, second is that can repeatedly cool down to electric arc, to reach arc extinguishing purpose.And work as 2 He of moving contact
Between static contact 1 distance farther out when, since arc temperature is greatly lowered by lower part grid 301, ionization is also weaker, lead to
Good arc extinguishing can either be played the role of also and can save the material of production grid 301 by crossing distance between improving grid 301, reduction at
This.
The shell 4 is the cylindrical body of inner hollow, cylindrical body and extraneous sealing, is full of sulfur hexafluoride in shell 4.Hexafluoro
Change sulphur as a kind of insulating gas, there is lot of advantages, is a kind of colourless, tasteless, nontoxic, non-flammable inert gas, and have
Excellent cooling arc characteristic, higher cooling effect is especially generated under the action of switchgear has high arc temperature, is avoided
A possibility that localized hyperthermia.The insulation performance of sulfur hexafluoride is considerably beyond traditional oil, air insulation medium.It is used to electrically set
In standby, the size of equipment can be reduced, apparatus insulated reliability is improved.
The shell 4 further includes cooling pipe 5；
4 inner space of shell where 5 upper end of cooling pipe connection, the 3 lower part grid of arc-chute 301, cooling pipe 5
Lower end is connected between the adjacent grid 301 of the last two panels in 3 top of arc-chute, is located at outside shell 4 in the middle part of cooling pipe 5.
When moving contact of breaker 2 and static contact 1 disconnect, since moving contact of breaker 2 and static contact 1 are in 3 lower part of arc-chute
It is closer, electric arc is stronger, therefore the temperature generated in this position relatively up to arrives thousands of degree, so that sulfur hexafluoride is anxious herein
Play expansion, and 3 top electric arc of arc-chute is weaker, so that lower in the temperature that this position generates, sulfur hexafluoride expansion is smaller, makes
It obtains 3 lower part of arc-chute and top and generates pressure difference, since cooling pipe 5 is connected to two positions, 3 lower part grid 301 of arc-chute
Between sulfur hexafluoride can be blown to by cooling pipe 5 between the last two panels grid 301 in 3 top of arc-chute, sulfur hexafluoride exists
It is cooled by being exchanged heat with the external world when cooling pipe 5, the pipeline so that electric arc is cooled before 2 stop motion of moving contact
The 5 gas coolings blown are blown out.
5 material of cooling pipe is high-temperature insulation ceramics.High-temperature insulation ceramic insulation, can be avoided in breaker
Portion's electric current is transmitted to outside, and is also resistant to the high temperature that electric arc is discharged.
5 upper end diameter of cooling pipe is less than 5 lower end diameter of cooling pipe.The smaller hexafluoro for making blowout of upper end diameter
Change sulphur flow velocity faster, sulfur hexafluoride flow velocity is faster better to the blowing-out effect of electric arc.
The cooling pipe 5 includes 3；
5 top and bottom of cooling pipe are evenly distributed on shell 4 one weeks.
Enable sulfur hexafluoride to blow out electric arc from surrounding, it is more preferable to blow out effect.
5 upper end of cooling pipe 4 inner wall of shell 3 outlet-inclined impeller vanes, it is circumscribed composed by 3 outlet-inclined impeller vane directions
Circle is coaxial with shell.So that the sulfur hexafluoride that cooling pipe 5 is blown out is formed between two layers of grid 301 of 3 topmost of arc-chute
The air-flow of rotation increases arc quenching effect.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (8)
1. a kind of AC circuit breaker structure, comprising:
Static contact (1), moving contact (2), arc-chute (3) and shell (4)；
The static contact (1) is fixedly mounted on the lower part in shell (4), and moving contact (2) is up and down to be mounted on static contact (1) just
In the shell (4) of top；
Moving contact mounting hole (3011) are equipped in the middle part of the arc-chute (3), moving contact mounting hole (3011) diameter is greater than moving contact
(2) diameter, arc-chute (3) are fixedly mounted on static contact (1) top and are located at moving contact mounting hole (3011) by shell (4)
Right above static contact (1), moving contact (2) is mounted in moving contact mounting hole (3011)；
The arc-chute (3) includes 2 or more the grid being parallel to each other (301)；
It is characterized in that,
The grid (301) includes left grid (3012) and right grid (3013)；
There are gaps between the left grid (3012) and right grid (3013)；
The left grid (3012) and right grid (3013) are permanent magnet；
The left grid (3012) and right grid (3013) it is opposite face pole polarity it is opposite.
2. AC circuit breaker structure according to claim 1, which is characterized in that
Spacing increases at multiple from lower to upper between two adjacent grid (301) of the arc-chute (3).
3. AC circuit breaker structure according to claim 1, which is characterized in that
The shell (4) is the cylindrical body of inner hollow, cylindrical body and extraneous sealing, is full of sulfur hexafluoride in shell (4).
4. AC circuit breaker structure according to claim 3, which is characterized in that
The shell (4) further includes cooling pipe (5)；
Shell (4) inner space where cooling pipe (5) upper end connection arc-chute (3) lower part grid (301), cooling tube
Road (5) lower end is connected between the adjacent grid (301) of the last two panels in arc-chute (3) top, and shell is located in the middle part of cooling pipe (5)
(4) external.
5. AC circuit breaker structure according to claim 4, which is characterized in that
Cooling pipe (5) material is high-temperature insulation ceramics.
6. AC circuit breaker structure according to claim 4, which is characterized in that
Cooling pipe (5) upper end diameter is less than cooling pipe (5) lower end diameter.
7. AC circuit breaker structure according to claim 4, which is characterized in that
The cooling pipe (5) includes 3；
Cooling pipe (5) top and bottom are evenly distributed on shell (4) one weeks.
8. AC circuit breaker structure according to claim 7, which is characterized in that
Cooling pipe (5) upper end shell (4) inner wall 3 outlet-inclined impeller vanes, it is circumscribed composed by 3 outlet-inclined impeller vane directions
Circle is coaxial with shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920731292.4U CN209561273U (en) | 2019-05-21 | 2019-05-21 | A kind of AC circuit breaker structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920731292.4U CN209561273U (en) | 2019-05-21 | 2019-05-21 | A kind of AC circuit breaker structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209561273U true CN209561273U (en) | 2019-10-29 |
Family
ID=68313919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920731292.4U Active CN209561273U (en) | 2019-05-21 | 2019-05-21 | A kind of AC circuit breaker structure |
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| CN (1) | CN209561273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436928A (en) * | 2021-06-25 | 2021-09-24 | 哈尔滨工业大学 | Vacuum direct current arc-extinguishing chamber with permanent magnet embedded in contact |
-
2019
- 2019-05-21 CN CN201920731292.4U patent/CN209561273U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436928A (en) * | 2021-06-25 | 2021-09-24 | 哈尔滨工业大学 | Vacuum direct current arc-extinguishing chamber with permanent magnet embedded in contact |
| CN113436928B (en) * | 2021-06-25 | 2022-11-04 | 哈尔滨工业大学 | Vacuum direct-current arc extinguish chamber with permanent magnet embedded in contact |
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